{ "paper": { "school": "Pei Hwa", "year": 2023, "level": "P2", "label": "Semestral Assessment 2", "source_prefix": "Pei Hwa 2023 P2 Semestral Assessment 2", "has_answer_key": true }, "questions": [ { "n": 1, "type_id": 1, "question": "In 319, the value of the digit 1 is [?].", "answer0": "1", "answer1": "10", "answer2": "100", "answer3": "1000", "correct_answer": 1, "skill_id": 29, "difficulty_id": 1, "explanation": "In 319, the digit 1 is in the tens place, so its value is 10.", "hints": ["Look at which place the digit 1 sits in.", "The tens place holds groups of ten."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q1", "image_needed": false, "image_options": false, "image_file": null, "notes": "Key Q1 = 2 (option 2 = 10)." }, { "n": 2, "type_id": 1, "question": "Which one of the following number sentences is not correct?", "answer0": "6 groups of 2", "answer1": "6 twos", "answer2": "6 x 2", "answer3": "6 + 2", "correct_answer": 3, "skill_id": 36, "difficulty_id": 1, "explanation": "The picture shows 6 groups of 2 stars (12 stars). '6 groups of 2', '6 twos' and '6 x 2' all describe this; '6 + 2' does not.", "hints": ["Count the stars in each group and the number of groups.", "Repeated groups mean multiplication, not addition."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q2", "image_needed": true, "image_options": false, "image_file": null, "image_page": 3, "image_loc": "middle of page, below the question stem: a 6-by-2 grid of stars", "notes": "Key Q2 = 4 (option 4 = 6 + 2)." }, { "n": 3, "type_id": 1, "question": "The length of the pencil is [?] cm long.", "answer0": "9", "answer1": "2", "answer2": "10", "answer3": "11", "correct_answer": 0, "skill_id": 50, "difficulty_id": 2, "explanation": "The pencil runs from the 2 cm mark to the 11 cm mark, so its length is 11 - 2 = 9 cm.", "hints": ["Find where each end of the pencil sits on the ruler.", "Subtract the start mark from the end mark."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q3", "image_needed": true, "image_options": false, "image_file": null, "image_page": 4, "image_loc": "top of page: a ruler (0-12 cm) with a pencil aligned beneath it", "notes": "Key Q3 = 1 (option 1 = 9)." }, { "n": 4, "type_id": 1, "question": "The mass of the packet of oranges is [?] g.", "answer0": "210", "answer1": "220", "answer2": "250", "answer3": "260", "correct_answer": 2, "skill_id": 50, "difficulty_id": 2, "explanation": "The needle on the weighing scale points to 250 g.", "hints": ["Read where the pointer rests on the dial.", "Each major mark is 100 g; count the small divisions."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q4", "image_needed": true, "image_options": false, "image_file": null, "image_page": 4, "image_loc": "middle of page: a kitchen weighing scale (0-900 g dial) with a packet of oranges on top", "notes": "Key Q4 = 3 (option 3 = 250)." }, { "n": 5, "type_id": 1, "question": "580¢ is the same as [?].", "answer0": "$0.58", "answer1": "$5.08", "answer2": "$5.80", "answer3": "$58.00", "correct_answer": 2, "skill_id": 48, "difficulty_id": 1, "explanation": "100 cents = $1, so 580 cents = $5.80.", "hints": ["Divide the number of cents by 100.", "100 cents make one dollar."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q5", "image_needed": false, "image_options": false, "image_file": null, "notes": "Key Q5 = 3 (option 3 = $5.80)." }, { "n": 6, "type_id": 1, "question": "The solid is a [?].", "answer0": "cuboid", "answer1": "cube", "answer2": "cone", "answer3": "cylinder", "correct_answer": 0, "skill_id": 62, "difficulty_id": 1, "explanation": "The solid is a rectangular box with 6 rectangular faces, which is a cuboid.", "hints": ["Count the faces and check their shapes.", "A box whose faces are rectangles is a cuboid."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q6", "image_needed": true, "image_options": false, "image_file": null, "image_page": 5, "image_loc": "middle of page: a 3-D drawing of a rectangular box (cuboid)", "notes": "Key Q6 = 1 (option 1 = cuboid). Stem stripped of 'below'." }, { "n": 7, "type_id": 1, "question": "Which of the following shows that 1/4 of the figure is shaded?", "answer0": "Figure A", "answer1": "Figure B", "answer2": "Figure C", "answer3": "Figure D", "correct_answer": 2, "skill_id": 41, "difficulty_id": 2, "explanation": "Figure C is a square split into 4 equal parts with 1 part shaded, which is 1/4.", "hints": ["The figure must be divided into 4 equal parts.", "Exactly one of the four equal parts should be shaded."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q7", "image_needed": true, "image_options": true, "image_file": null, "image_page": 6, "image_loc": "options (1)-(4) down the left: (1) triangle, (2) rectangle in 4 strips, (3) square in 4 cells, (4) circle in 3 bands", "notes": "Key Q7 = 3 (option 3, the 2x2 square with one cell shaded). Image-option MCQ: crop each option to q7_opt0..opt3.png." }, { "n": 8, "type_id": 1, "question": "What is the time shown?", "answer0": "9.55", "answer1": "10.11", "answer2": "10.55", "answer3": "11.10", "correct_answer": 0, "skill_id": 55, "difficulty_id": 2, "explanation": "The hour hand is just before 10 and the minute hand points to 11 (55 minutes), so the time is 9.55.", "hints": ["Read the minute hand first, then the hour hand.", "The minute hand on 11 means 55 minutes past the hour."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q8", "image_needed": true, "image_options": false, "image_file": null, "image_page": 7, "image_loc": "top of page: an analogue clock face with hour hand near 10 and minute hand on 11", "notes": "Key Q8 = 1 (option 1 = 9.55). Stem stripped of 'below'." }, { "n": 9, "type_id": 1, "question": "The volume of water in the beaker is [?] ℓ.", "answer0": "7", "answer1": "6", "answer2": "5", "answer3": "4", "correct_answer": 2, "skill_id": 50, "difficulty_id": 2, "explanation": "The water level is at the 5-litre mark on the beaker.", "hints": ["Find the marking the water surface reaches.", "Read the scale on the side of the beaker."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q9", "image_needed": true, "image_options": false, "image_file": null, "image_page": 7, "image_loc": "middle of page: a beaker marked 6, 8, 10 litres with water shaded up to the 5-litre level", "notes": "Key Q9 = 3 (option 3 = 5)." }, { "n": 10, "type_id": 1, "question": "The picture graph shows the number of cakes Julie sold from Monday to Wednesday. Each symbol stands for 3 cakes. How many cakes did Julie sell on all three days?", "answer0": "28", "answer1": "21", "answer2": "14", "answer3": "7", "correct_answer": 1, "skill_id": 64, "difficulty_id": 2, "explanation": "Monday 2 + Tuesday 1 + Wednesday 4 = 7 symbols. 7 x 3 = 21 cakes.", "hints": ["Count the symbols across all three rows.", "Multiply the total number of symbols by 3."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q10", "image_needed": true, "image_options": false, "image_file": null, "image_page": 8, "image_loc": "top of page: a picture graph table (Monday 2, Tuesday 1, Wednesday 4 triangle symbols)", "notes": "Key Q10 = 2 (option 2 = 21). Stem stripped of 'below'; 'Each ... stands for 3 cakes' kept as it is the scale." }, { "n": 11, "type_id": 2, "question": "Study the number pattern. What is the missing number? 724, 726, 728, [?], 732, 734, 736", "answer0": "730", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 32, "difficulty_id": 1, "explanation": "The numbers increase by 2 each time, so the missing number is 728 + 2 = 730.", "hints": ["Find the difference between consecutive numbers.", "Add the step size to the number before the gap."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q11", "image_needed": false, "image_options": false, "image_file": null, "notes": "Key Q11 = 730. Number sequence rendered inline; the '?' bubble becomes the blank." }, { "n": 12, "type_id": 2, "question": "15 ÷ [?] = 3", "answer0": "5", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 39, "difficulty_id": 1, "explanation": "15 ÷ 5 = 3, so the missing number is 5.", "hints": ["What number multiplied by 3 gives 15?", "Use the division fact 15 ÷ 5 = 3."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q12", "image_needed": false, "image_options": false, "image_file": null, "notes": "Key Q12 = 5. Picture of 3 ovals of objects is illustrative only; equation captures the task, so image not required." }, { "n": 13, "type_id": 1, "question": "The diagram shows the length of three ribbons, P, Q and R. Which ribbon is the longest?", "answer0": "Ribbon P", "answer1": "Ribbon Q", "answer2": "Ribbon R", "answer3": "All the same", "correct_answer": 0, "skill_id": 53, "difficulty_id": 2, "explanation": "Measured against the ruler, Ribbon P spans the greatest length, so P is the longest.", "hints": ["Read the start and end marks of each ribbon on the ruler.", "The ribbon covering the most cm is the longest."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q13", "image_needed": true, "image_options": false, "image_file": null, "image_page": 10, "image_loc": "top of page: a ruler (0-10 cm) with three labelled ribbons P, Q, R drawn beneath it", "notes": "Word answer (ribbon name) -> MCQ per spec. Key Q13 = Ribbon P (option 1)." }, { "n": 14, "type_id": 2, "question": "What is the mass of the pear? [?] g", "answer0": "300", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 50, "difficulty_id": 2, "explanation": "The orange weighs 100 g (left scale). The orange and pear together weigh 400 g (right scale). So the pear is 400 - 100 = 300 g.", "hints": ["Read the orange's mass on the first scale.", "Subtract the orange's mass from the combined mass."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q14", "image_needed": true, "image_options": false, "image_file": null, "image_page": 10, "image_loc": "middle of page: two weighing scales - left shows an orange (100 g), right shows orange + pear (400 g)", "notes": "Key Q14 = 300g. Stem stripped of 'below'." }, { "n": 15, "type_id": 2, "question": "What is the total amount of money shown? $[?]", "answer0": "21.75", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 45, "difficulty_id": 3, "explanation": "Notes: $10 + $5 + $5 = $20. Coins: $1 + 50¢ + 10¢ + 10¢ + 5¢ = $1.75. Total = $20 + $1.75 = $21.75.", "hints": ["Add up the notes first, then the coins.", "Convert the coins to dollars before adding."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q15", "image_needed": true, "image_options": false, "image_file": null, "image_page": 11, "image_loc": "top of page: three notes ($10, $5, $5) and five coins ($1, 50c, 10c, 10c, 5c)", "notes": "Key Q15 = $21.75. Stem stripped of 'below'. Note denominations are faint scans; total reconciled to key." }, { "n": 16, "type_id": 2, "question": "The clock shows a time in the afternoon. What is the time 30 minutes later? [?] p.m.", "answer0": "5.15", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 58, "difficulty_id": 2, "explanation": "The clock shows 4.45 p.m. 30 minutes later is 4.45 + 30 min = 5.15 p.m.", "hints": ["Read the time on the clock first.", "Add 30 minutes to that time."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q16", "image_needed": true, "image_options": false, "image_file": null, "image_page": 11, "image_loc": "middle of page: an analogue clock showing 4.45 (hour hand near 5, minute hand on 9)", "notes": "Key Q16 = 5.15 p.m. Stem stripped of 'below'; answer captured as time only since 'p.m.' is printed after the blank." }, { "n": 17, "type_id": 2, "question": "The table shows the number of stickers collected by 4 girls. Each symbol stands for 10 stickers. How many girls collected more than 20 stickers?", "answer0": "2", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 64, "difficulty_id": 2, "explanation": "Lauren 1 (10), Molly 3 (30), Norah 2 (20), Olivia 4 (40). More than 20 means Molly and Olivia, so 2 girls.", "hints": ["Work out each girl's sticker count (symbols x 10).", "Count only those strictly above 20."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q17", "image_needed": true, "image_options": false, "image_file": null, "image_page": 12, "image_loc": "top of page: a picture graph table (Lauren 1, Molly 3, Norah 2, Olivia 4 circle symbols)", "notes": "Key Q17 = 2. Stem stripped of 'below'; scale 'Each ... stands for 10 stickers' kept." }, { "n": 18, "type_id": 2, "question": "Mrs Chan used three 2-litre bottles to fill the fish tank until it was full. How much water could the fish tank hold? [?] ℓ", "answer0": "6", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 54, "difficulty_id": 1, "explanation": "3 bottles x 2 litres = 6 litres.", "hints": ["Each bottle holds 2 litres.", "Multiply the number of bottles by 2."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q18", "image_needed": false, "image_options": false, "image_file": null, "notes": "Key Q18 = 6. The figure of bottles and tank is decorative; the text gives all needed values, so image not required." }, { "n": 19, "type_id": 2, "question": "8 hundreds 15 tens and 13 ones = [?]", "answer0": "963", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 29, "difficulty_id": 2, "explanation": "800 + 150 + 13 = 963.", "hints": ["Write each part as a number: hundreds, tens, ones.", "Add 800, 150 and 13 together."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q19", "image_needed": false, "image_options": false, "image_file": null, "notes": "Key Q19 = 963." }, { "n": 20, "type_id": 2, "question": "What is the difference between the greatest and the smallest number? 991, 909, 199, 919", "answer0": "792", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 34, "difficulty_id": 2, "explanation": "Greatest is 991, smallest is 199. 991 - 199 = 792.", "hints": ["Find the largest and the smallest of the four numbers.", "Subtract the smallest from the largest."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q20", "image_needed": false, "image_options": false, "image_file": null, "notes": "Key Q20 = 792. Numbers shown in apple shapes are decorative; values rendered inline so no image needed. Stem stripped of 'below'." }, { "n": 21, "type_id": 2, "question": "I am a 3-digit number between 300 and 400. The digit in the tens place is 2. The digit in the ones place is three times the digit in the tens place. What number am I?", "answer0": "326", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 29, "difficulty_id": 2, "explanation": "Between 300 and 400 means hundreds digit 3. Tens digit is 2. Ones digit is 3 x 2 = 6. So the number is 326.", "hints": ["The hundreds digit must be 3.", "Work out the ones digit: three times the tens digit."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q21", "image_needed": false, "image_options": false, "image_file": null, "notes": "Key Q21 = 326." }, { "n": 22, "type_id": 2, "question": "Benny and his 3 friends ate 7 cookies each. How many cookies did they eat altogether?", "answer0": "28", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 40, "difficulty_id": 2, "explanation": "Benny plus 3 friends = 4 people. 4 x 7 = 28 cookies.", "hints": ["How many people are eating in total?", "Multiply the number of people by 7."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q22", "image_needed": false, "image_options": false, "image_file": null, "notes": "Key Q22 = 28." }, { "n": 23, "type_id": 2, "question": "A pen cost $2. Rena paid $18 for a few similar pens. How many pens did she buy?", "answer0": "9", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 40, "difficulty_id": 2, "explanation": "$18 ÷ $2 = 9 pens.", "hints": ["Divide the total amount by the price of one pen.", "$18 ÷ $2 = ?"], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q23", "image_needed": false, "image_options": false, "image_file": null, "notes": "Key Q23 = 9." }, { "n": 24, "type_id": 2, "question": "Mary has 5 vases and 12 flowers. She wants to put 3 flowers in each vase. How many more flowers does she need?", "answer0": "3", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 40, "difficulty_id": 3, "explanation": "5 vases x 3 flowers = 15 flowers needed. She has 12, so she needs 15 - 12 = 3 more.", "hints": ["Work out how many flowers are needed to fill all vases.", "Subtract the flowers she already has."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q24", "image_needed": false, "image_options": false, "image_file": null, "notes": "Key Q24 = 3." }, { "n": 25, "type_id": 2, "question": "Study the diagram. What is the mass of B?", "answer0": "31", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 53, "difficulty_id": 3, "explanation": "Right balance: A + 11g = 20g, so A = 9g. Left balance: A + B = 40g, so B = 40 - 9 = 31g.", "hints": ["Use the second balance to find the mass of A.", "Then use the first balance to find B."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q25", "image_needed": true, "image_options": false, "image_file": null, "image_page": 15, "image_loc": "top of page: two see-saw balances - left A+B vs 40g, right A+11g vs 20g", "notes": "Key Q25 = 31g. Stem stripped of 'shown below'. Answer blank prints 'g' after, so answer captured as 31." }, { "n": 26, "type_id": 2, "question": "Arrange the following fractions from the smallest to the greatest. 1/7, 1/2, 1/10", "answer0": "1/10", "answer1": "1/7", "answer2": "1/2", "answer3": null, "correct_answer": null, "skill_id": 43, "difficulty_id": 2, "explanation": "For unit fractions, the larger the denominator the smaller the fraction. So 1/10 < 1/7 < 1/2.", "hints": ["With the same numerator (1), a bigger bottom number is a smaller fraction.", "Order the denominators from largest to smallest."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q26", "image_needed": false, "image_options": false, "image_file": null, "notes": "Ordering task -> FIB with one blank per position (smallest first). Key Q26 = 1/10, 1/7, 1/2." }, { "n": 27, "type_id": 2, "question": "There were 1000 people at a concert. 349 of them were children and the rest were adults. (a) How many adults were at the concert? (b) How many more adults than children were at the concert?", "answer0": "651", "answer1": "302", "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 35, "difficulty_id": 2, "explanation": "(a) 1000 - 349 = 651 adults. (b) 651 - 349 = 302 more adults than children.", "hints": ["Subtract the children from the total to get adults.", "Then subtract children from adults for the difference."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q27", "image_needed": false, "image_options": false, "image_file": null, "notes": "Two-part question; answer0 = part (a), answer1 = part (b). Key Q27a = 651, Q27b = 302." }, { "n": 28, "type_id": 2, "question": "A book has 90 pages. Jean reads 10 pages each day. (a) How many days will Jean take to finish reading the book? (b) Jean starts reading the book on Monday. How many pages of the book would she have read by the end of Friday?", "answer0": "9", "answer1": "50", "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 40, "difficulty_id": 2, "explanation": "(a) 90 ÷ 10 = 9 days. (b) Monday to Friday is 5 days; 5 x 10 = 50 pages.", "hints": ["Divide total pages by pages per day.", "Count the days Monday-Friday, then multiply by 10."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q28", "image_needed": false, "image_options": false, "image_file": null, "notes": "Two-part question; answer0 = part (a), answer1 = part (b). Key Q28a = 9, Q28b = 50." }, { "n": 29, "type_id": 2, "question": "Jeremy had 800 marbles. He put 256 marbles in Box A and 178 marbles in Box B. (a) How many marbles did he put in the two boxes? (b) Jeremy then gave away the rest of the marbles to Martin. How many marbles did he give to Martin?", "answer0": "434", "answer1": "366", "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 35, "difficulty_id": 2, "explanation": "(a) 256 + 178 = 434 marbles in the two boxes. (b) 800 - 434 = 366 marbles given to Martin.", "hints": ["Add the marbles in Box A and Box B.", "Subtract the total in boxes from 800."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q29", "image_needed": false, "image_options": false, "image_file": null, "notes": "Two-part question; answer0 = part (a), answer1 = part (b). Key Q29a = 434, Q29b = 366." }, { "n": 30, "type_id": 2, "question": "The mass of Parcel A is 450 g. It is 285 g heavier than Parcel B. (a) What is the mass of Parcel B? (b) What is the total mass of Parcel A and Parcel B?", "answer0": "165", "answer1": "615", "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 54, "difficulty_id": 2, "explanation": "(a) 450 - 285 = 165 g for Parcel B. (b) 450 + 165 = 615 g total.", "hints": ["A is heavier than B, so subtract 285 from 450.", "Add the two parcel masses for the total."], "source": "Pei Hwa 2023 P2 Semestral Assessment 2 Q30", "image_needed": false, "image_options": false, "image_file": null, "notes": "Two-part question; answer0 = part (a), answer1 = part (b). Key Q30a = 165g, Q30b = 615g." } ] }