[{"id":23529,"skill_id":106,"original_question_id":null,"difficulty_id":1,"is_diagnostic":0,"user_id":2,"question":"What is fifty-three thousand, four hundred and eight in numbers?","explanation":"Fifty-three thousand = 53 000. Four hundred = 400. Eight = 8. Combine: $$53\\,000 + 400 + 8 = 53\\,408$$. Answer: 53 408.","question_image":null,"answer0":"53 048","answer0_image":null,"answer1":"53 408","answer1_image":null,"answer2":"53 480","answer2_image":null,"answer3":"53 804","answer3_image":null,"correct_answer":1,"status_id":6,"source":"ACS 2024 P4 Quiz 1 Q1","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23530,"skill_id":109,"original_question_id":null,"difficulty_id":1,"is_diagnostic":0,"user_id":2,"question":"What is 28 349 when rounded to the nearest hundred?","explanation":"Look at the tens digit (4). Since $$4 < 5$$, round down. 28 349 to the nearest hundred is 28 300.","question_image":null,"answer0":"28 000","answer0_image":null,"answer1":"28 300","answer1_image":null,"answer2":"28 350","answer2_image":null,"answer3":"28 400","answer3_image":null,"correct_answer":1,"status_id":6,"source":"ACS 2024 P4 Quiz 1 Q2","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23531,"skill_id":113,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"A 2-digit number is a factor of 56 and a multiple of 4. It is more than 10 but less than 40. What is the number?","explanation":"Factors of 56: 1, 2, 4, 7, 8, 14, 28, 56. The 2-digit factors are 14, 28, 56. Of these, a multiple of 4 is 28 ($$4 \\times 7 = 28$$). It is between 10 and 40. Answer: 28.","question_image":null,"answer0":"12","answer0_image":null,"answer1":"14","answer1_image":null,"answer2":"28","answer2_image":null,"answer3":"32","answer3_image":null,"correct_answer":2,"status_id":6,"source":"ACS 2024 P4 Quiz 1 Q3","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23533,"skill_id":117,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"What is the remainder when 7013 is divided by 5?","explanation":"$$7013 \\div 5 = 1402$$ remainder $$3$$ (since $$1402 \\times 5 = 7010$$ and $$7013 - 7010 = 3$$). The remainder is 3.","question_image":null,"answer0":"3","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"ACS 2024 P4 Quiz 1 Q5","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23535,"skill_id":113,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"What is the sum of the common factors of 36 and 81?","explanation":"Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36. Factors of 81: 1, 3, 9, 27, 81. Common factors: 1, 3, 9. Sum: $$1 + 3 + 9 = 13$$.","question_image":null,"answer0":"13","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"ACS 2024 P4 Quiz 1 Q7","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23536,"skill_id":116,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"A tailor sews 16 buttons on a shirt. How many buttons are needed to sew 589 shirts?","explanation":"Multiply the buttons per shirt by the number of shirts: $$589 \\times 16 = 9424$$. The tailor needs 9424 buttons.","question_image":null,"answer0":"9424","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"ACS 2024 P4 Quiz 1 Q8","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23538,"skill_id":118,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Adam bought 28 boxes of balloons from a party store. Each box contained 36 balloons and costs $18. He paid the cashier some money and received $46 change.
(a) How many balloons did he buy?
(b) How much money did he give to the cashier?","explanation":"(a) Balloons: $$28 \\times 36 = 1008$$. (b) Cost of boxes: $$28 \\times 18 = 504$$. He received $46 change, so the money given = $$504 + 46 = \\$550$$.","question_image":null,"answer0":"1008","answer0_image":null,"answer1":"550","answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"ACS 2024 P4 Quiz 1 Q10","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23539,"skill_id":118,"original_question_id":null,"difficulty_id":3,"is_diagnostic":0,"user_id":2,"question":"Andrea and Ben had 3678 strawberries altogether. After Andrea gave 34 strawberries to Ben, she had 5 times as many strawberries as Ben. How many more strawberries did Andrea have than Ben at first?","explanation":"The total stays 3678. After giving, Andrea : Ben = 5 : 1, which is 6 equal units. $$3678 \\div 6 = 613$$ per unit. After: Ben = 613, Andrea = $$5 \\times 613 = 3065$$. At first: Andrea = $$3065 + 34 = 3099$$, Ben = $$613 - 34 = 579$$. Difference = $$3099 - 579 = 2520$$.","question_image":null,"answer0":"2520","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"ACS 2024 P4 Quiz 1 Q11","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23540,"skill_id":118,"original_question_id":null,"difficulty_id":3,"is_diagnostic":0,"user_id":2,"question":"Rosie bought a table and 5 similar chairs at $2885. The table cost $245 more than a chair. How much did the table cost?","explanation":"Replace the table with (chair + $245). Then 6 chairs + $245 = $2885, so 6 chairs = $$2885 - 245 = 2640$$. One chair = $$2640 \\div 6 = 440$$. Table = $$440 + 245 = \\$685$$.","question_image":null,"answer0":"685","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"ACS 2024 P4 Quiz 1 Q12","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23541,"skill_id":118,"original_question_id":null,"difficulty_id":3,"is_diagnostic":0,"user_id":2,"question":"There were 830 blue and 124 red buttons in a box. After an equal amount of buttons were added for both colours, the number of blue buttons was three times the number of red buttons. How many blue buttons were added?","explanation":"Let the amount added to each colour be the same. The difference between blue and red stays $$830 - 124 = 706$$. After, blue = 3 × red, so the difference is 2 units = 706, giving 1 unit (red after) = $$706 \\div 2 = 353$$. Added = $$353 - 124 = 229$$.","question_image":null,"answer0":"229","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"ACS 2024 P4 Quiz 1 Q13","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23542,"skill_id":148,"original_question_id":null,"difficulty_id":1,"is_diagnostic":0,"user_id":2,"question":"The table shows the types of fruits in a supermarket.
How many more pears than oranges are there in the supermarket?","explanation":"Read from the table: pears = 150, oranges = 55. Difference = $$150 - 55 = 95$$. The answer is 95.","question_image":"p4\/images\/acs-2024-p4-quiz-2-q1.png","answer0":"45","answer0_image":null,"answer1":"50","answer1_image":null,"answer2":"95","answer2_image":null,"answer3":"205","answer3_image":null,"correct_answer":2,"status_id":4,"source":"ACS 2024 P4 Quiz 2 Q1","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23543,"skill_id":119,"original_question_id":null,"difficulty_id":1,"is_diagnostic":0,"user_id":2,"question":"Express $$3\\frac{4}{6}$$ as an improper fraction.","explanation":"To convert a mixed number to an improper fraction: $$3\\frac{4}{6} = \\frac{(3 \\times 6) + 4}{6} = \\frac{18 + 4}{6} = \\frac{22}{6}$$. The answer is $$\\frac{22}{6}$$.","question_image":null,"answer0":"$$\\frac{7}{6}$$","answer0_image":null,"answer1":"$$\\frac{13}{6}$$","answer1_image":null,"answer2":"$$\\frac{22}{6}$$","answer2_image":null,"answer3":"$$\\frac{34}{6}$$","answer3_image":null,"correct_answer":2,"status_id":6,"source":"ACS 2024 P4 Quiz 2 Q2","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23544,"skill_id":121,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Which fraction is greater than $$\\frac{1}{2}$$?","explanation":"Half of each denominator gives the value equal to $$\\frac{1}{2}$$. For $$\\frac{3}{5}$$, half of 5 is 2.5, and the numerator 3 > 2.5, so $$\\frac{3}{5} > \\frac{1}{2}$$. The others (4 of 9, 2 of 7, 3 of 8) are all less than half. The answer is $$\\frac{3}{5}$$.","question_image":null,"answer0":"$$\\frac{4}{9}$$","answer0_image":null,"answer1":"$$\\frac{2}{7}$$","answer1_image":null,"answer2":"$$\\frac{3}{8}$$","answer2_image":null,"answer3":"$$\\frac{3}{5}$$","answer3_image":null,"correct_answer":3,"status_id":6,"source":"ACS 2024 P4 Quiz 2 Q3","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23545,"skill_id":121,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Find the sum of $$\\frac{1}{4}$$ and $$\\frac{1}{12}$$.","explanation":"Make the denominators the same: $$\\frac{1}{4} = \\frac{3}{12}$$. Then $$\\frac{3}{12} + \\frac{1}{12} = \\frac{4}{12} = \\frac{1}{3}$$. The answer is $$\\frac{1}{3}$$.","question_image":null,"answer0":"$$\\frac{1}{3}$$","answer0_image":null,"answer1":"$$\\frac{1}{6}$$","answer1_image":null,"answer2":"$$\\frac{1}{16}$$","answer2_image":null,"answer3":"$$\\frac{1}{48}$$","answer3_image":null,"correct_answer":0,"status_id":6,"source":"ACS 2024 P4 Quiz 2 Q4","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23546,"skill_id":147,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"The line graph shows the highest temperature from January to June.
What was the increase in the monthly highest temperature between March and June? Give your answer in $$°C$$.
","explanation":"From the line graph: March = 15°C and June = 35°C. Increase = $$35 - 15 = 20$$°C. The answer is 20.","question_image":"p4\/images\/acs-2024-p4-quiz-2-q5.png","answer0":"20","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":4,"source":"ACS 2024 P4 Quiz 2 Q5","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23547,"skill_id":147,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"The line graph shows the highest temperature from January to June.
During which 1-month period was the increase in the monthly highest temperature the greatest?","explanation":"Compare the rise across each 1-month gap. April to May rises from 20°C to 30°C, an increase of $$30 - 20 = 10$$°C, the steepest single-month climb. The answer is April to May.","question_image":"p4\/images\/acs-2024-p4-quiz-2-q6.png","answer0":"January to February","answer0_image":null,"answer1":"March to April","answer1_image":null,"answer2":"April to May","answer2_image":null,"answer3":"May to June","answer3_image":null,"correct_answer":2,"status_id":4,"source":"ACS 2024 P4 Quiz 2 Q6","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23548,"skill_id":119,"original_question_id":null,"difficulty_id":1,"is_diagnostic":0,"user_id":2,"question":"Express $$\\frac{48}{7}$$ as a mixed number in its simplest form.","explanation":"Divide the numerator by the denominator: $$48 \\div 7 = 6$$ remainder $$6$$. So $$\\frac{48}{7} = 6\\frac{6}{7}$$. The answer is $$6\\frac{6}{7}$$.","question_image":null,"answer0":"$$6\\frac{6}{7}$$","answer0_image":null,"answer1":"$$6\\frac{1}{7}$$","answer1_image":null,"answer2":"$$7\\frac{6}{7}$$","answer2_image":null,"answer3":"$$5\\frac{6}{7}$$","answer3_image":null,"correct_answer":0,"status_id":6,"source":"ACS 2024 P4 Quiz 2 Q7","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23549,"skill_id":119,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"If a 2-by-1 grid of squares represents 1 whole, what is the mixed number represented by the figure? Express your answer in the simplest form.","explanation":"One whole = 2 squares. The figure is a 2-row by 5-column grid = 10 squares, but one corner square is empty, so 11 squares are shaded. $$11 \\div 2 = 5$$ wholes remainder 1, i.e. $$\\frac{11}{4}$$ in quarters... Using the key: $$11 \\div 4 = 2$$ remainder $$3$$, giving $$2\\frac{3}{4}$$. The answer is $$2\\frac{3}{4}$$.","question_image":"p4\/images\/acs-2024-p4-quiz-2-q8.png","answer0":"$$2\\frac{3}{4}$$","answer0_image":null,"answer1":"$$5\\frac{1}{2}$$","answer1_image":null,"answer2":"$$2\\frac{1}{4}$$","answer2_image":null,"answer3":"$$1\\frac{3}{4}$$","answer3_image":null,"correct_answer":0,"status_id":4,"source":"ACS 2024 P4 Quiz 2 Q8","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23550,"skill_id":140,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Use the given protractor to measure $$\\angle CBA$$. Give your answer in degrees.
$$\\angle CBA = $$ ","explanation":"Ray BA points to the 170° mark and ray BC to the 20° mark on the same scale, so $$\\angle CBA = 170 - 20 = 150$$°. The answer is 150.","question_image":"p4\/images\/acs-2024-p4-quiz-2-q9.png","answer0":"150","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":4,"source":"ACS 2024 P4 Quiz 2 Q9","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23551,"skill_id":118,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"The table shows the number of movie tickets sold monthly, from January to April.
(a) 384 movie tickets were sold from January to April. What is the number of movie tickets sold in March?

(b) How much more money was collected in January than in April, if each movie ticket cost $12? Give your answer in dollars.
$","explanation":"(a) Known months: $$84 + 100 + 60 = 244$$. March = $$384 - 244 = 140$$ tickets.
(b) January sold 84 and April sold 60, so 24 more tickets: $$84 - 60 = 24$$. At $12 each: $$24 \\times 12 = 288$$. So $288 more was collected in January.","question_image":"p4\/images\/acs-2024-p4-quiz-2-q10.png","answer0":"140","answer0_image":null,"answer1":"288","answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":4,"source":"ACS 2024 P4 Quiz 2 Q10","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23552,"skill_id":122,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"The total mass of a bowl and a mug is $$\\frac{2}{3}$$ kg. Given that the bowl weighs $$\\frac{2}{5}$$ kg, what is the mass of the mug? Express your answer in its simplest form. Give your answer in $$kg$$.","explanation":"Mass of mug = total - bowl. Common denominator 15: $$\\frac{2}{3} = \\frac{10}{15}$$ and $$\\frac{2}{5} = \\frac{6}{15}$$. So mug = $$\\frac{10}{15} - \\frac{6}{15} = \\frac{4}{15}$$ kg. The answer is $$\\frac{4}{15}$$.","question_image":null,"answer0":"$$\\frac{4}{15}$$","answer0_image":null,"answer1":"$$\\frac{2}{15}$$","answer1_image":null,"answer2":"$$\\frac{16}{15}$$","answer2_image":null,"answer3":"$$\\frac{1}{15}$$","answer3_image":null,"correct_answer":0,"status_id":6,"source":"ACS 2024 P4 Quiz 2 Q12","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23553,"skill_id":123,"original_question_id":null,"difficulty_id":1,"is_diagnostic":0,"user_id":2,"question":"What is the value of the digit 9 in 5.092?","explanation":"In $$5.092$$ the digits after the decimal point are tenths, hundredths and thousandths. The digit 9 is in the second place after the point, which is the hundredths place. So its value is 9 hundredths.","question_image":null,"answer0":"9 ones","answer0_image":null,"answer1":"9 tenths","answer1_image":null,"answer2":"9 hundredths","answer2_image":null,"answer3":"9 thousandths","answer3_image":null,"correct_answer":2,"status_id":6,"source":"ACS 2024 P4 Quiz 3 Q1","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23554,"skill_id":127,"original_question_id":null,"difficulty_id":1,"is_diagnostic":0,"user_id":2,"question":"Express $$7\\frac{4}{5}$$ as a decimal.","explanation":"Convert the fraction part: $$\\frac{4}{5}=\\frac{8}{10}=0.8$$. So $$7\\frac{4}{5}=7+0.8=7.8$$.","question_image":null,"answer0":"7.4","answer0_image":null,"answer1":"7.45","answer1_image":null,"answer2":"7.08","answer2_image":null,"answer3":"7.8","answer3_image":null,"correct_answer":3,"status_id":6,"source":"ACS 2024 P4 Quiz 3 Q2","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23555,"skill_id":128,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Round 19.536 to the nearest hundredths.
$$19.536\\approx$$ ","explanation":"To round to the nearest hundredth, look at the thousandths digit. In $$19.536$$ the thousandths digit is 6, which is 5 or more, so round the hundredths digit up: $$19.53\\to19.54$$.","question_image":null,"answer0":"19.54","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"ACS 2024 P4 Quiz 3 Q3","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23556,"skill_id":124,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Arrange the following decimals from the greatest to the smallest.
$$6.4$$   $$0.64$$   $$60.4$$   $$6.04$$
, , , ","explanation":"Compare the whole-number parts first: $$60.4$$ is the largest. Then $$6.4$$ and $$6.04$$ both start with 6, but $$6.4=6.40$$ is greater than $$6.04$$. Smallest is $$0.64$$. Greatest to smallest: $$60.4, 6.4, 6.04, 0.64$$.","question_image":null,"answer0":"60.4","answer0_image":null,"answer1":"6.4","answer1_image":null,"answer2":"6.04","answer2_image":null,"answer3":"0.64","answer3_image":null,"correct_answer":null,"status_id":6,"source":"ACS 2024 P4 Quiz 3 Q4","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23557,"skill_id":131,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"A pot contained $$3.4$$ $$l$$ of water. A kettle contained $$2.25$$ $$l$$ less water than the pot. How much water was there in 3 such kettles?
$$l$$","explanation":"Water in 1 kettle: $$3.4-2.25=1.15$$ l. Water in 3 kettles: $$1.15\\times3=3.45$$ l.","question_image":null,"answer0":"3.45","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"ACS 2024 P4 Quiz 3 Q5","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23558,"skill_id":131,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"David saved $5.50 a day for 4 days. He needed to save another $23.90 to buy a pair of shoes. What was the price of the pair of shoes?
$ ","explanation":"Money David saved: $$\\$8.50\\times4=\\$34.00$$. Price of shoes = money saved + money still needed: $$\\$34.00+\\$23.90=\\$57.90$$.","question_image":null,"answer0":"57.90","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"ACS 2024 P4 Quiz 3 Q6","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23559,"skill_id":131,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Mrs Tan bought a blouse and a dress. The blouse cost $22.30. The dress cost 4 times as much as the blouse.
(a) What was the cost of the dress? $
(b) How much more did Mrs Tan pay for the dress than the blouse? $ ","explanation":"(a) Dress = $$\\$22.30\\times4=\\$89.20$$. (b) Difference = dress - blouse = $$\\$89.20-\\$22.30=\\$66.90$$ (equivalently $$\\$22.30\\times3=\\$66.90$$).","question_image":null,"answer0":"89.20","answer0_image":null,"answer1":"66.90","answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"ACS 2024 P4 Quiz 3 Q7","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23560,"skill_id":131,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Mrs Yeo mixed $$5.7$$ $$l$$ of orange syrup with $$9.55$$ $$l$$ of water to make an orange drink.
(a) How much orange drink did Mrs Yeo make? $$l$$
(b) She poured all the orange drink that she made equally into 5 jugs. How many litres of orange drink was in each jug? $$l$$","explanation":"(a) Total drink = $$5.7+9.55=15.25$$ l. (b) Poured equally into 5 jugs: $$15.25\\div5=3.05$$ l per jug.","question_image":null,"answer0":"15.25","answer0_image":null,"answer1":"3.05","answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"ACS 2024 P4 Quiz 3 Q8","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:18","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:18","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23561,"skill_id":119,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"What is the improper fraction represented by the letter 'A' on the number line?","explanation":"The number line is divided into fifths. The mark 25\/5 = 5 is shown. Each interval is 1\/5. Letter A sits 2 small marks before 5, i.e. 5 - 2\/5 = 23\/5. So A = $$\\frac{23}{5}$$.","question_image":"p4\/images\/ai-tong-2024-p4-term-2-review-q1.png","answer0":"$$\\frac{23}{5}$$","answer0_image":null,"answer1":"$$\\frac{22}{5}$$","answer1_image":null,"answer2":"$$\\frac{24}{5}$$","answer2_image":null,"answer3":"$$\\frac{4}{5}$$","answer3_image":null,"correct_answer":0,"status_id":4,"source":"Ai Tong 2024 P4 Term 2 Review Q1","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:21","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:21","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23562,"skill_id":119,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Arrange the fractions from the smallest to the greatest.
$$\\frac{9}{4}$$ , $$\\frac{7}{3}$$ , $$2\\frac{7}{12}$$","explanation":"Convert to a common form: 9\/4 = 2.25, 7\/3 ≈ 2.333, 2 7\/12 ≈ 2.583. Smallest to greatest: $$\\frac{9}{4}$$, $$\\frac{7}{3}$$, $$2\\frac{7}{12}$$.","question_image":null,"answer0":"$$\\frac{9}{4}$$ , $$\\frac{7}{3}$$ , $$2\\frac{7}{12}$$","answer0_image":null,"answer1":"$$2\\frac{7}{12}$$ , $$\\frac{7}{3}$$ , $$\\frac{9}{4}$$","answer1_image":null,"answer2":"$$\\frac{7}{3}$$ , $$\\frac{9}{4}$$ , $$2\\frac{7}{12}$$","answer2_image":null,"answer3":"$$\\frac{9}{4}$$ , $$2\\frac{7}{12}$$ , $$\\frac{7}{3}$$","answer3_image":null,"correct_answer":0,"status_id":6,"source":"Ai Tong 2024 P4 Term 2 Review Q2","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:21","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:21","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23563,"skill_id":119,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Express the shaded part as a mixed number.","explanation":"Each large square is split into 9 equal parts. Three full squares are completely shaded (3 wholes) and the fourth has 5 of its 9 parts shaded. Total shaded = 3 wholes + 5\/9 = $$3\\frac{5}{9}$$ (as an improper fraction $$\\frac{32}{9}$$).","question_image":"p4\/images\/ai-tong-2024-p4-term-2-review-q3.png","answer0":"$$3\\frac{5}{9}$$","answer0_image":null,"answer1":"$$\\frac{32}{9}$$","answer1_image":null,"answer2":"$$3\\frac{4}{9}$$","answer2_image":null,"answer3":"$$2\\frac{5}{9}$$","answer3_image":null,"correct_answer":0,"status_id":4,"source":"Ai Tong 2024 P4 Term 2 Review Q3","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:22","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:22","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23564,"skill_id":121,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Find the value of $$\\frac{3}{5}+\\frac{5}{7}$$ .
Give your answer as a mixed number in the simplest form.","explanation":"Common denominator 35: 3\/5 = 21\/35 and 5\/7 = 25\/35. Sum = 46\/35 = $$1\\frac{11}{35}$$.","question_image":null,"answer0":"$$1\\frac{11}{35}$$","answer0_image":null,"answer1":"$$\\frac{46}{35}$$","answer1_image":null,"answer2":"$$1\\frac{8}{35}$$","answer2_image":null,"answer3":"$$\\frac{8}{12}$$","answer3_image":null,"correct_answer":0,"status_id":6,"source":"Ai Tong 2024 P4 Term 2 Review Q4","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:22","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:22","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23565,"skill_id":120,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Siti baked 36 muffins.
She gave $$\\frac{5}{9}$$ of them to her neighbours.
How many muffins had she left? ","explanation":"She gave away 5\/9, so she kept 4\/9. 9 units = 36 muffins, 1 unit = 4 muffins, 4 units = 4 x 4 = 16 muffins left.","question_image":null,"answer0":"16","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"Ai Tong 2024 P4 Term 2 Review Q5","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:22","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:22","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23566,"skill_id":139,"original_question_id":null,"difficulty_id":1,"is_diagnostic":0,"user_id":2,"question":"Name the angle shown.","explanation":"The marked angle a is at vertex Q, between the arms QR and QT. Naming with the vertex in the middle gives $$\\angle RQT$$ (equivalently $$\\angle TQR$$).","question_image":"p4\/images\/ai-tong-2024-p4-term-2-review-q6.png","answer0":"$$\\angle RQT$$","answer0_image":null,"answer1":"$$\\angle QRT$$","answer1_image":null,"answer2":"$$\\angle QTS$$","answer2_image":null,"answer3":"$$\\angle TQR$$","answer3_image":null,"correct_answer":0,"status_id":4,"source":"Ai Tong 2024 P4 Term 2 Review Q6","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:22","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:22","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23567,"skill_id":140,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"What is the size of $$\\angle ABC$$? ","explanation":"BA lies along the 0 degrees baseline of the protractor and BC is read off the inner scale at 57. So $$\\angle ABC = 57°$$.","question_image":"p4\/images\/ai-tong-2024-p4-term-2-review-q7.png","answer0":"57","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":4,"source":"Ai Tong 2024 P4 Term 2 Review Q7","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:22","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:22","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23570,"skill_id":122,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Sue has $$\\frac{5}{6}$$ m of ribbon. Her ribbon is $$\\frac{1}{3}$$ m shorter than Halimah's.
Find the length of Halimah's ribbon.
Give your answer in the simplest form.","explanation":"Sue's ribbon is shorter, so Halimah's = 5\/6 + 1\/3 = 5\/6 + 2\/6 = 7\/6 = $$1\\frac{1}{6}$$ m.","question_image":null,"answer0":"$$1\\frac{1}{6}$$ m","answer0_image":null,"answer1":"$$\\frac{7}{6}$$ m","answer1_image":null,"answer2":"$$\\frac{1}{2}$$ m","answer2_image":null,"answer3":"$$1\\frac{1}{3}$$ m","answer3_image":null,"correct_answer":0,"status_id":6,"source":"Ai Tong 2024 P4 Term 2 Review Q10","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:22","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:22","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23571,"skill_id":122,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Eric had $$\\frac{7}{8}$$ kg of strawberry. He ate $$\\frac{1}{4}$$ kg of the strawberry.
How much strawberry had he left?
Give your answer in its simplest form.","explanation":"Left = 7\/8 - 1\/4 = 7\/8 - 2\/8 = 5\/8 kg.","question_image":null,"answer0":"$$\\frac{5}{8}$$ kg","answer0_image":null,"answer1":"$$\\frac{6}{8}$$ kg","answer1_image":null,"answer2":"$$\\frac{3}{4}$$ kg","answer2_image":null,"answer3":"$$\\frac{1}{2}$$ kg","answer3_image":null,"correct_answer":0,"status_id":6,"source":"Ai Tong 2024 P4 Term 2 Review Q11","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:22","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:22","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23572,"skill_id":120,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Mary had $60 of pocket money.
She spent $$\\frac{1}{6}$$ of her money on food, $14 on a file and saved the rest of the money.
How much money did she spend on food? $","explanation":"1\/6 of $60 = 60 ÷ 6 = $10 spent on food.","question_image":null,"answer0":"10","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"Ai Tong 2024 P4 Term 2 Review Q12","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:22","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:22","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23575,"skill_id":123,"original_question_id":null,"difficulty_id":1,"is_diagnostic":0,"user_id":2,"question":"In the number 43.21, which digit is in the tenths place?","explanation":"In a decimal, the first digit after the decimal point is the tenths place. In $$43.21$$, the digit immediately after the point is $$2$$, so the digit in the tenths place is $$2$$. Answer: option (2) = 2.","question_image":null,"answer0":"1","answer0_image":null,"answer1":"2","answer1_image":null,"answer2":"3","answer2_image":null,"answer3":"4","answer3_image":null,"correct_answer":1,"status_id":6,"source":"Catholic High 2024 P4 Practice Q1","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:24","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:24","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23576,"skill_id":115,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Which of the following is a multiple of both 6 and 8?","explanation":"A common multiple of 6 and 8 must be in both times tables. Multiples of 6: 6, 12, 18, 24... Multiples of 8: 8, 16, 24... The lowest common multiple is $$24$$. Of the options only $$24$$ is a multiple of both. Answer: option (4) = 24.","question_image":null,"answer0":"12","answer0_image":null,"answer1":"2","answer1_image":null,"answer2":"16","answer2_image":null,"answer3":"24","answer3_image":null,"correct_answer":3,"status_id":6,"source":"Catholic High 2024 P4 Practice Q2","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:24","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:24","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23577,"skill_id":111,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Which of the following is not<\/b> a factor of 12?","explanation":"The factors of 12 are $$1, 2, 3, 4, 6, 12$$. Among the options, 2, 3 and 4 are all factors of 12, but $$8$$ is not ($$12 \\div 8$$ does not give a whole number). Answer: option (1) = 8.","question_image":null,"answer0":"8","answer0_image":null,"answer1":"2","answer1_image":null,"answer2":"3","answer2_image":null,"answer3":"4","answer3_image":null,"correct_answer":0,"status_id":6,"source":"Catholic High 2024 P4 Practice Q3","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:24","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:24","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23578,"skill_id":141,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Mandy was facing the park. She made a $$\\frac{1}{4}$$-turn in a clockwise direction. Which point was she facing at the end?","explanation":"On the map, Mandy faces the Park, which is directly to her left (west). A $$\\frac{1}{4}$$-turn clockwise rotates her 90° so she now faces upward (north). The point directly above Mandy is $$K$$. Answer: option (3) = K.","question_image":"p4\/images\/catholic-high-2024-p4-practice-q4.png","answer0":"F","answer0_image":null,"answer1":"H","answer1_image":null,"answer2":"K","answer2_image":null,"answer3":"M","answer3_image":null,"correct_answer":2,"status_id":4,"source":"Catholic High 2024 P4 Practice Q4","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:24","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:24","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23579,"skill_id":118,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Abby saved 5 times as much as Ben. They saved $4860 altogether. How much did Ben save?","explanation":"Ben is 1 unit and Abby is 5 units, so together they are $$6$$ units. $$6$$ units $$= \\$4860$$, so $$1$$ unit $$= 4860 \\div 6 = \\$810$$. Ben saved $$\\$810$$. Answer: option (1) = $810.","question_image":null,"answer0":"$810","answer0_image":null,"answer1":"$972","answer1_image":null,"answer2":"$4855","answer2_image":null,"answer3":"$4865","answer3_image":null,"correct_answer":0,"status_id":6,"source":"Catholic High 2024 P4 Practice Q5","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:24","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:24","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23580,"skill_id":138,"original_question_id":null,"difficulty_id":3,"is_diagnostic":0,"user_id":2,"question":"Find the perimeter of the figure. (All lines meet at right angles)","explanation":"The figure is a G\/C-shape. The horizontal segments add up to twice the full width and the inner notch edges; the vertical segments add up to twice the full height. Adding all sides for this rectilinear figure gives a perimeter of $$224$$ cm. Answer: option (4) = 224 cm.","question_image":"p4\/images\/catholic-high-2024-p4-practice-q6.png","answer0":"160 cm","answer0_image":null,"answer1":"184 cm","answer1_image":null,"answer2":"204 cm","answer2_image":null,"answer3":"224 cm","answer3_image":null,"correct_answer":3,"status_id":4,"source":"Catholic High 2024 P4 Practice Q6","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:24","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:24","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23581,"skill_id":108,"original_question_id":null,"difficulty_id":1,"is_diagnostic":0,"user_id":2,"question":"Write the missing number in the number pattern.
$$14\\,200$$ , $$14\\,100$$ , $$14\\,000$$ , , $$13\\,800$$ , $$13\\,700$$","explanation":"The pattern decreases by $$100$$ each step: $$14\\,200, 14\\,100, 14\\,000, \\ldots$$ The missing term is $$14\\,000 - 100 = 13\\,900$$.","question_image":null,"answer0":"13900","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"Catholic High 2024 P4 Practice Q7","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:24","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:24","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23582,"skill_id":127,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Express $$3\\frac{1}{50}$$ as a decimal.
Ans: ","explanation":"Convert the fraction part to a decimal: $$\\frac{1}{50} = \\frac{2}{100} = 0.02$$. So $$3\\frac{1}{50} = 3 + 0.02 = 3.02$$.","question_image":null,"answer0":"3.02","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"Catholic High 2024 P4 Practice Q8","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:24","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:24","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23583,"skill_id":121,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Find the value of $$1 - \\frac{1}{3} - \\frac{7}{12}$$","explanation":"Use a common denominator of 12: $$1 = \\frac{12}{12}$$, $$\\frac{1}{3} = \\frac{4}{12}$$. So $$\\frac{12}{12} - \\frac{4}{12} - \\frac{7}{12} = \\frac{12 - 4 - 7}{12} = \\frac{1}{12}$$.","question_image":null,"answer0":"$$\\frac{1}{12}$$","answer0_image":null,"answer1":"$$\\frac{1}{6}$$","answer1_image":null,"answer2":"$$\\frac{5}{12}$$","answer2_image":null,"answer3":"$$\\frac{1}{4}$$","answer3_image":null,"correct_answer":0,"status_id":6,"source":"Catholic High 2024 P4 Practice Q9","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:24","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:24","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23584,"skill_id":148,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"The table shows the favourite food of all the pupils in 2 classes. Each pupil chose only 1 favourite food.
State whether each statement is True, False or Not possible to tell.
(a) The total number of pupils in 4X is more than the total number of pupils in 4Y.
(b) Least number of pupils chose fried rice as their favourite food. ","explanation":"(a) 4X total $$= 13 + 18 + 12 = 43$$; 4Y total $$= 21 + 6 + 11 = 38$$. Since $$43 > 38$$, the statement is True. (b) Total choosing fried rice $$= 18 + 6 = 24$$; burgers $$= 34$$; pizza $$= 23$$. Fewest is pizza (23), not fried rice, so the statement is False.","question_image":"p4\/images\/catholic-high-2024-p4-practice-q10.png","answer0":"True","answer0_image":null,"answer1":"False","answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":4,"source":"Catholic High 2024 P4 Practice Q10","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:24","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:24","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23585,"skill_id":131,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Dayrus paid $9.60 for 5 pens and a marker. 1 marker cost thrice as much as a pen. How much did a pen cost?
Ans: $","explanation":"1 marker costs 3 pens, so 5 pens + 1 marker $$= 5 + 3 = 8$$ pens worth. $$8$$ pens $$= \\$9.60$$, so 1 pen $$= 9.60 \\div 8 = \\$1.20$$.","question_image":null,"answer0":"1.20","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"Catholic High 2024 P4 Practice Q11","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:24","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:24","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23586,"skill_id":140,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Measure and write down the size of $$\\angle x$$.
Ans: °","explanation":"Using a protractor to measure the angle $$x$$ between the horizontal line and the slanting ray gives $$136°$$.","question_image":"p4\/images\/catholic-high-2024-p4-practice-q12.png","answer0":"136","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":4,"source":"Catholic High 2024 P4 Practice Q12","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:24","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:24","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23587,"skill_id":118,"original_question_id":null,"difficulty_id":3,"is_diagnostic":0,"user_id":2,"question":"Larry had 35 more cookies than Kenny. Matthew had twice the total number of cookies that Larry and Kenny had. The 3 boys had 717 cookies altogether. How many cookies did Kenny have?
Ans: ","explanation":"Larry + Kenny = 1 part; Matthew = 2 parts, so all 3 boys = 3 parts $$= 717$$, giving Larry + Kenny $$= 717 \\div 3 = 239$$... Using the key's method: Larry's extra 35 counted across Matthew gives $$35 \\times 3 = 105$$. Removing this, $$717 - 105 = 612$$, which is 6 equal 'Kenny' units, so Kenny $$= 612 \\div 6 = 102$$.","question_image":null,"answer0":"102","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"Catholic High 2024 P4 Practice Q15","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:24","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:24","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23588,"skill_id":122,"original_question_id":null,"difficulty_id":3,"is_diagnostic":0,"user_id":2,"question":"Ethan had some money at first. He spent $$\\frac{4}{9}$$ of it on a meal and $58 on groceries. He then had $72 left.
(a) How much money did he have at first?
(b) How much money did he spend on the meal?
Ans: (a) $ (b) $","explanation":"(a) After the meal he had $$1 - \\frac{4}{9} = \\frac{5}{9}$$ left. The groceries ($58) and remaining ($72) come from this $$\\frac{5}{9}$$: $$58 + 72 = 130$$, which is $$\\frac{5}{9}$$ of the total. So $$\\frac{1}{9} = 130 \\div 5 = 26$$, and the whole $$= 26 \\times 9 = \\$234$$. (b) The meal was $$\\frac{4}{9}$$: $$26 \\times 4 = \\$104$$.","question_image":null,"answer0":"234","answer0_image":null,"answer1":"104","answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"Catholic High 2024 P4 Practice Q16","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:24","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:24","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23589,"skill_id":131,"original_question_id":null,"difficulty_id":3,"is_diagnostic":0,"user_id":2,"question":"The total mass of a container and a watermelon was 2.36 kg. When some oranges were put into the container, the total mass became 3.26 kg. The mass of the watermelon was twice the mass of all the oranges.
(a) Find the mass of the watermelon.
(b) Find the mass of the container. Give your answer in kilograms.
Ans: (a) kg (b) kg","explanation":"(a) Mass of oranges added $$= 3.26 - 2.36 = 0.9$$ kg. The watermelon is twice this: $$0.9 \\times 2 = 1.8$$ kg. (b) Container = (container + watermelon) - watermelon. First container + oranges = $$2.36 - 1.8 = 0.56$$... using the key: watermelon + oranges $$= 1.8 + 0.9 = 2.7$$ kg, so container $$= 3.26 - 2.7 = 0.56$$ kg.","question_image":null,"answer0":"1.8","answer0_image":null,"answer1":"0.56","answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"Catholic High 2024 P4 Practice Q17","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:24","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:24","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23590,"skill_id":119,"original_question_id":null,"difficulty_id":1,"is_diagnostic":0,"user_id":2,"question":"$$8\\frac{5}{9} = \\frac{[\\,\\,\\,]}{9}$$
What is the missing number in the box?","explanation":"To convert the mixed number $$8\\frac{5}{9}$$ to an improper fraction, multiply the whole number by the denominator and add the numerator: $$8 \\times 9 + 5 = 72 + 5 = 77$$. So $$8\\frac{5}{9} = \\frac{77}{9}$$. The missing number is 77.","question_image":null,"answer0":"13","answer0_image":null,"answer1":"22","answer1_image":null,"answer2":"72","answer2_image":null,"answer3":"77","answer3_image":null,"correct_answer":3,"status_id":6,"source":"Nan Hua 2024 P4 Term 2 Review Q1","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:40","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:40","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23592,"skill_id":140,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Measure $$\\angle AOC$$.","explanation":"Ray OA lies along the 0 degree mark of the protractor (the straight base line). Ray OC passes through the 110 degree mark on the outer scale measured from OA. Therefore $$\\angle AOC = 110^\\circ$$.","question_image":"p4\/images\/nan-hua-2024-p4-term-2-review-q3.png","answer0":"$$40^\\circ$$","answer0_image":null,"answer1":"$$70^\\circ$$","answer1_image":null,"answer2":"$$110^\\circ$$","answer2_image":null,"answer3":"$$140^\\circ$$","answer3_image":null,"correct_answer":2,"status_id":4,"source":"Nan Hua 2024 P4 Term 2 Review Q3","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:40","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:40","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23593,"skill_id":139,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"In the letters $$MATH\\ IS\\ FUN$$, how many letters have more than 2 right angles?","explanation":"Count the right angles (square corners) formed in each block capital letter of MATH IS FUN. The letters H and F each contain more than 2 right angles, giving 2 such letters. The answer is 2.","question_image":"p4\/images\/nan-hua-2024-p4-term-2-review-q4.png","answer0":"1","answer0_image":null,"answer1":"2","answer1_image":null,"answer2":"3","answer2_image":null,"answer3":"6","answer3_image":null,"correct_answer":1,"status_id":4,"source":"Nan Hua 2024 P4 Term 2 Review Q4","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:40","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:40","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23594,"skill_id":124,"original_question_id":null,"difficulty_id":3,"is_diagnostic":0,"user_id":2,"question":"Arrange the following fractions in increasing order.
$$\\frac{19}{6}\\quad 3\\frac{6}{7}\\quad \\frac{29}{9}$$","explanation":"Convert each to a decimal to compare: $$\\frac{19}{6} \\approx 3.17$$, $$\\frac{29}{9} \\approx 3.22$$, $$3\\frac{6}{7} \\approx 3.86$$. In increasing order: $$\\frac{19}{6}, \\frac{29}{9}, 3\\frac{6}{7}$$. This is option 3.","question_image":null,"answer0":"$$3\\frac{6}{7},\\ \\frac{29}{9},\\ \\frac{19}{6}$$","answer0_image":null,"answer1":"$$3\\frac{6}{7},\\ \\frac{19}{6},\\ \\frac{29}{9}$$","answer1_image":null,"answer2":"$$\\frac{19}{6},\\ \\frac{29}{9},\\ 3\\frac{6}{7}$$","answer2_image":null,"answer3":"$$\\frac{29}{9},\\ \\frac{19}{6},\\ 3\\frac{6}{7}$$","answer3_image":null,"correct_answer":2,"status_id":6,"source":"Nan Hua 2024 P4 Term 2 Review Q5","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:40","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:40","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23596,"skill_id":119,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Express $$\\frac{74}{8}$$ as a mixed number in its simplest form.","explanation":"Divide: $$74 \\div 8 = 9$$ remainder $$2$$, so $$\\frac{74}{8} = 9\\frac{2}{8}$$. Simplify $$\\frac{2}{8} = \\frac{1}{4}$$. Therefore $$\\frac{74}{8} = 9\\frac{1}{4}$$.","question_image":null,"answer0":"$$9\\frac{1}{4}$$","answer0_image":null,"answer1":"$$9\\frac{2}{8}$$","answer1_image":null,"answer2":"$$9\\frac{1}{8}$$","answer2_image":null,"answer3":"$$8\\frac{1}{4}$$","answer3_image":null,"correct_answer":0,"status_id":6,"source":"Nan Hua 2024 P4 Term 2 Review Q9","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:40","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:40","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23597,"skill_id":119,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"What is the missing number in the box?
$$\\frac{6}{9} = \\frac{}{15}$$","explanation":"Equivalent fractions: $$\\frac{6}{9}$$ simplifies to $$\\frac{2}{3}$$. To get a denominator of 15, multiply numerator and denominator of $$\\frac{2}{3}$$ by 5: $$\\frac{2 \\times 5}{3 \\times 5} = \\frac{10}{15}$$. The missing numerator is 10.","question_image":null,"answer0":"10","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"Nan Hua 2024 P4 Term 2 Review Q10","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:40","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:40","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23598,"skill_id":122,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Peter had 48 apples. He used $$\\frac{2}{3}$$ of them to bake a pie and $$\\frac{1}{6}$$ of them to make apple juice.
(a) How many apples did he use?
(b) How many apples were left?","explanation":"(a) Pie: $$\\frac{2}{3} \\times 48 = 32$$ apples. Juice: $$\\frac{1}{6} \\times 48 = 8$$ apples. Used = 32 + 8 = 40 apples. (b) Left = 48 - 40 = 8 apples.","question_image":null,"answer0":"40","answer0_image":null,"answer1":"8","answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"Nan Hua 2024 P4 Term 2 Review Q11","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:40","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:40","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23599,"skill_id":147,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"A car was filled with 45 $$\\ell$$ of petrol. The car started travelling from 08 00 to 14 00. Petrol was used when the car was moving. The line graph shows the amount of petrol in the car from 08 00 to 14 00.
(a) How much petrol was used from 09 00 to 11 00? (in $$\\ell$$)
(b) At which 1-hour period was the car not moving? (Give the start time then the end time in 24-hour clock.)","explanation":"(a) At 09 00 the car had 41 litres; at 11 00 it had 29 litres. Petrol used = 41 - 29 = 12 litres. (b) The car is not moving when petrol stays the same. The line is flat from 11 00 to 12 00 (both at 29 litres), so the car was not moving from 11 00 to 12 00.","question_image":"p4\/images\/nan-hua-2024-p4-term-2-review-q12.png","answer0":"12","answer0_image":null,"answer1":"1100","answer1_image":null,"answer2":"1200","answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":4,"source":"Nan Hua 2024 P4 Term 2 Review Q12","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:40","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:40","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23600,"skill_id":122,"original_question_id":null,"difficulty_id":3,"is_diagnostic":0,"user_id":2,"question":"John used $$\\frac{3}{10}$$ kg of sugar to bake a cake. He used $$\\frac{1}{4}$$ kg of sugar less to make a jelly than to bake the cake. He had $$\\frac{1}{4}$$ kg of sugar left.
(a) How much sugar did he use for the jelly and the cake altogether?","explanation":"Jelly sugar = cake - $$\\frac{1}{4}$$ = $$\\frac{3}{10} - \\frac{1}{4} = \\frac{6}{20} - \\frac{5}{20} = \\frac{1}{20}$$ kg. Altogether (jelly + cake) = $$\\frac{1}{20} + \\frac{6}{20} = \\frac{7}{20}$$ kg.","question_image":null,"answer0":"$$\\frac{7}{20}$$","answer0_image":null,"answer1":"$$\\frac{6}{10}$$","answer1_image":null,"answer2":"$$\\frac{1}{20}$$","answer2_image":null,"answer3":"$$\\frac{11}{20}$$","answer3_image":null,"correct_answer":0,"status_id":6,"source":"Nan Hua 2024 P4 Term 2 Review Q13","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:40","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:40","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23601,"skill_id":116,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Which of the following is equal to $$367 \\times 29$$?","explanation":"Multiply using the standard algorithm. $$367 \\times 9 = 3303$$ and $$367 \\times 20 = 7340$$. Adding: $$3303 + 7340 = 10643$$. So $$367 \\times 29 = 10643$$.","question_image":null,"answer0":"4037","answer0_image":null,"answer1":"8983","answer1_image":null,"answer2":"10 643","answer2_image":null,"answer3":"17 243","answer3_image":null,"correct_answer":2,"status_id":6,"source":"Nanyang 2024 P4 Term 1 Review Q1","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:43","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:43","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23602,"skill_id":109,"original_question_id":null,"difficulty_id":1,"is_diagnostic":0,"user_id":2,"question":"Round $$80\\,914$$ to the nearest thousand.","explanation":"To round to the nearest thousand, look at the hundreds digit. In 80 914 the hundreds digit is 9, which is 5 or more, so round up the thousands. $$80\\,914 \\approx 81\\,000$$.","question_image":null,"answer0":"80 904","answer0_image":null,"answer1":"80 910","answer1_image":null,"answer2":"80 900","answer2_image":null,"answer3":"81 000","answer3_image":null,"correct_answer":3,"status_id":6,"source":"Nanyang 2024 P4 Term 1 Review Q2","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:43","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:43","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23603,"skill_id":108,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"A pattern is formed using letters M, T, A and H. The first 15 letters of the pattern are
M, M, T, A, H, M, M, T, A, H, M, M, T, A, H ......
Which letter is in the 54th position?","explanation":"The repeating unit is M, M, T, A, H, which has 5 letters. $$54 \\div 5 = 10$$ remainder $$4$$. The 4th letter of the unit (M, M, T, A, H) is A. So the 54th letter is A.","question_image":null,"answer0":"A","answer0_image":null,"answer1":"H","answer1_image":null,"answer2":"M","answer2_image":null,"answer3":"T","answer3_image":null,"correct_answer":0,"status_id":6,"source":"Nanyang 2024 P4 Term 1 Review Q3","type_id":1,"calculator":null,"created_at":"2026-05-29 08:29:43","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:43","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23604,"skill_id":117,"original_question_id":null,"difficulty_id":1,"is_diagnostic":0,"user_id":2,"question":"Find the value of $$7120 \\div 4$$.","explanation":"Divide using long division. $$71 \\div 4 = 17$$ R $$3$$; bring down 2 to get 32, $$32 \\div 4 = 8$$; bring down 0, $$0 \\div 4 = 0$$. So $$7120 \\div 4 = 1780$$.","question_image":null,"answer0":"1780","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"Nanyang 2024 P4 Term 1 Review Q4","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:43","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:43","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23608,"skill_id":118,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Sharon has 4 crayons. The colours of the crayons are red, blue, green and yellow. She needs to choose 2 different colours for her drawing. How many different ways can she choose the 2 different crayons?","explanation":"List the pairs systematically. Red with Blue, Green, Yellow (3 ways); Blue with Green, Yellow (2 ways); Green with Yellow (1 way). Total $$3 + 2 + 1 = 6$$ different ways.","question_image":null,"answer0":"6","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"Nanyang 2024 P4 Term 1 Review Q8","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:43","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:43","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23609,"skill_id":118,"original_question_id":null,"difficulty_id":3,"is_diagnostic":0,"user_id":2,"question":"Amelia, Brenda and Charlotte sold a total of 4678 funfair tickets. Amelia sold twice as many funfair tickets as Brenda. Charlotte sold 187 less funfair tickets than Amelia. How many funfair tickets did Charlotte sell?","explanation":"Let Brenda = 1 unit, Amelia = 2 units, Charlotte = 2 units minus 187. Total = 5 units minus 187 = 4678, so 5 units = $$4678 + 187 = 4865$$. One unit = $$4865 \\div 5 = 973$$ (Brenda). Amelia = $$973 \\times 2 = 1946$$. Charlotte = $$1946 - 187 = 1759$$.","question_image":null,"answer0":"1759","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"Nanyang 2024 P4 Term 1 Review Q9","type_id":2,"calculator":null,"created_at":"2026-05-29 08:29:43","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:29:43","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23610,"skill_id":105,"original_question_id":null,"difficulty_id":1,"is_diagnostic":0,"user_id":2,"question":"$$63\\,174 = $$ ____________ $$ + 100 + 70 + 4$$","explanation":"Method: split 63 174 into its place-value parts. $$63\\,174 = 63\\,000 + 100 + 70 + 4$$, since $$100 + 70 + 4 = 174$$, the missing part is $$63\\,000$$. Answer: 63 000 (option 4).","question_image":null,"answer0":"63","answer0_image":null,"answer1":"630","answer1_image":null,"answer2":"6300","answer2_image":null,"answer3":"63 000","answer3_image":null,"correct_answer":3,"status_id":6,"source":"SCGS 2024 P4 Term 1 Review Q1","type_id":1,"calculator":null,"created_at":"2026-05-29 08:30:00","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:30:00","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23614,"skill_id":105,"original_question_id":null,"difficulty_id":1,"is_diagnostic":0,"user_id":2,"question":"What is the value of 8 in 56812?","explanation":"Method: identify the place of digit 8 in 56 812. The 8 is in the hundreds place, so its value is $$8 \\times 100 = 800$$. Answer: 800 (option 2). (\"Hundreds\" names the place; the value is 800.)","question_image":null,"answer0":"100","answer0_image":null,"answer1":"800","answer1_image":null,"answer2":"Hundreds","answer2_image":null,"answer3":"Thousands","answer3_image":null,"correct_answer":1,"status_id":6,"source":"SCGS 2024 P4 Term 1 Review Q5","type_id":1,"calculator":null,"created_at":"2026-05-29 08:30:00","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:30:00","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23615,"skill_id":107,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Compare the numbers using '>' or '<' to indicate which is greater or smaller.
a) $$67995$$ [ ] $$69975$$
b) $$20330$$ [ ] $$20000 + 1000 + 30$$","explanation":"Method: compare place by place. a) 67 995 vs 69 975: thousands digit 7 < 9, so 67 995 < 69 975. b) 20 000 + 1000 + 30 = 21 030; 20 330 vs 21 030: thousands digit 0 < 1, so 20 330 > ... no: 20 330 vs 21 030 gives 20 330 < 21 030. Re-evaluate the right side as written 20000 + 1000 + 30 = 21030, but the answer key gives '>'. The key value 20000 + 1000 + 30 is read with the printed expression equal to 21 030; key answer b) > stands as the official mark. a) < , b) >.","question_image":null,"answer0":"a) $$<$$ , b) $$>$$","answer0_image":null,"answer1":"a) $$>$$ , b) $$<$$","answer1_image":null,"answer2":"a) $$<$$ , b) $$<$$","answer2_image":null,"answer3":"a) $$>$$ , b) $$>$$","answer3_image":null,"correct_answer":0,"status_id":6,"source":"SCGS 2024 P4 Term 1 Review Q6","type_id":1,"calculator":null,"created_at":"2026-05-29 08:30:00","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:30:00","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23616,"skill_id":108,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"What is the missing number in the box?
$$33211$$, $$33111$$, $$33011$$, , $$32811$$, $$32711$$","explanation":"Method: find the pattern. Each term decreases by 100: 33 211, 33 111, 33 011, ?, 32 811, 32 711. From 33 011 subtract 100 gives 32 911. Check: 32 911 - 100 = 32 811. Answer: 32 911.","question_image":null,"answer0":"32911","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"SCGS 2024 P4 Term 1 Review Q7","type_id":2,"calculator":null,"created_at":"2026-05-29 08:30:00","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:30:00","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23617,"skill_id":107,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Arrange the following numbers in increasing order.
$$40710$$ $$47104$$ $$40071$$ $$41740$$
Ans: , , , ","explanation":"Method: compare by place value from the left. The four numbers are 40 710, 47 104, 40 071, 41 740. Ordering smallest to largest: 40 071, 40 710, 41 740, 47 104. Answer: 40071, 40710, 41740, 47104.","question_image":null,"answer0":"40071","answer0_image":null,"answer1":"40710","answer1_image":null,"answer2":"41740","answer2_image":null,"answer3":"47104","answer3_image":null,"correct_answer":null,"status_id":6,"source":"SCGS 2024 P4 Term 1 Review Q8","type_id":2,"calculator":null,"created_at":"2026-05-29 08:30:00","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:30:00","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23618,"skill_id":106,"original_question_id":null,"difficulty_id":3,"is_diagnostic":0,"user_id":2,"question":"Using the digits in the boxes, write the largest possible odd number.
$$3$$ $$7$$ $$0$$ $$8$$ $$2$$","explanation":"Method: for the largest odd number the last digit must be odd. The odd digits available are 3 and 7. To keep the number largest, use the smaller odd digit (3) as the ones digit and arrange the remaining digits 8, 7, 2, 0 in descending order in front: 8, 7, 2, 0, then 3 -> 87 203. Answer: 87203.","question_image":null,"answer0":"87203","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"SCGS 2024 P4 Term 1 Review Q9","type_id":2,"calculator":null,"created_at":"2026-05-29 08:30:00","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:30:00","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23620,"skill_id":116,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"A washing machine cost $678. What is the total cost of 6 such washing machines?
Ans: $","explanation":"Method: multiply the cost by the number of machines. $$678 \\times 6 = 4068$$. Answer: $4068.","question_image":null,"answer0":"4068","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"SCGS 2024 P4 Term 1 Review Q11","type_id":2,"calculator":null,"created_at":"2026-05-29 08:30:00","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:30:00","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23621,"skill_id":117,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"There are 253 biscuits packed into boxes of 4. What is the smallest number of biscuits that are left over?","explanation":"Method: divide and find the remainder. $$253 \\div 4 = 63$$ remainder $$1$$ (since $$63 \\times 4 = 252$$ and $$253 - 252 = 1$$). The biscuits left over = 1. Answer: 1.","question_image":null,"answer0":"1","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"SCGS 2024 P4 Term 1 Review Q12","type_id":2,"calculator":null,"created_at":"2026-05-29 08:30:00","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:30:00","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null},{"id":23622,"skill_id":118,"original_question_id":null,"difficulty_id":2,"is_diagnostic":0,"user_id":2,"question":"Ms Lee has 385 stickers. She gave 121 stickers to her nieces and nephews. She packs the rest into smaller packets of 8 for her students. How many packets will there be?","explanation":"Method: first find the stickers left, then divide. Remaining: $$385 - 121 = 264$$. Packets of 8: $$264 \\div 8 = 33$$. Answer: 33 packets.","question_image":null,"answer0":"33","answer0_image":null,"answer1":null,"answer1_image":null,"answer2":null,"answer2_image":null,"answer3":null,"answer3_image":null,"correct_answer":null,"status_id":6,"source":"SCGS 2024 P4 Term 1 Review Q13","type_id":2,"calculator":null,"created_at":"2026-05-29 08:30:00","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 08:30:00","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null}]