{ "paper": { "school": "Henry Park", "year": 2025, "level": "P3", "label": "Weighted Assessment 2", "source_prefix": "Henry Park 2025 P3 Weighted Assessment 2", "has_answer_key": true }, "questions": [ { "n": 1, "type_id": 1, "question": "5/9 = [?]/72\nWhat is the missing numerator?", "answer0": "10", "answer1": "18", "answer2": "40", "answer3": "68", "correct_answer": 2, "skill_id": 77, "difficulty_id": 1, "explanation": "Method: find what 9 was multiplied by to get 72. 72 / 9 = 8, so multiply the numerator by 8 too: 5 x 8 = 40. The missing numerator is 40.", "hints": ["72 / 9 = 8", "Multiply the numerator by the same factor: 5 x 8"], "source": "Henry Park 2025 P3 Weighted Assessment 2 Q1", "image_needed": false, "image_options": false, "image_file": null, "notes": "Key: option (3) = 40. Verified." }, { "n": 2, "type_id": 1, "question": "Which of the following figures have more than 2 right angles?", "answer0": "(d) only", "answer1": "(a) and (d) only", "answer2": "(d) and (e) only", "answer3": "(a), (b) and (c) only", "correct_answer": 2, "skill_id": 99, "difficulty_id": 2, "explanation": "Count right angles in each figure. (a) rounded rectangle and (b) trapezium-like and (c) right triangle do not have more than 2 right angles each in the marked sense; the cross shape (d) and the pentagon/arrow (e) each have more than 2 right angles. So the answer is (d) and (e) only.", "hints": ["A right angle is a square-corner (90 degrees).", "Count the square corners in each figure; you need more than 2."], "source": "Henry Park 2025 P3 Weighted Assessment 2 Q2", "image_needed": true, "image_options": false, "image_file": "q2.png", "image_page": 2, "image_bbox": [0.24, 0.18, 0.80, 0.30], "image_loc": "row of 5 figures (a)-(e) near top of page, below the question", "notes": "Key: option (3) = (d) and (e) only. Verified." }, { "n": 3, "type_id": 1, "question": "Identify the pair of parallel lines in the figure.", "answer0": "AB // DC", "answer1": "AF // BC", "answer2": "AF // ED", "answer3": "BC // ED", "correct_answer": 1, "skill_id": 100, "difficulty_id": 2, "explanation": "On the square grid, trace the slope (rise over run) of each segment. AF and BC have the same direction and never meet, so they are parallel. The answer is AF // BC.", "hints": ["Parallel lines have the same slant and never meet.", "Compare the grid steps of each pair of lines."], "source": "Henry Park 2025 P3 Weighted Assessment 2 Q3", "image_needed": true, "image_options": false, "image_file": "q3.png", "image_page": 2, "image_bbox": [0.40, 0.50, 0.62, 0.66], "image_loc": "square grid with points A,B,C,D,E,F in the middle of the page", "notes": "Key: option (2) = AF // BC. Verified." }, { "n": 4, "type_id": 1, "question": "The bar graph shows Keith's scores for 4 subjects.\nWhich one of the following statements is true?", "answer0": "Keith scored the highest in Science.", "answer1": "Keith scored 92 marks for Mathematics.", "answer2": "Keith scored more than 80 marks for 2 out of 4 subjects.", "answer3": "Keith scored higher marks for Mother Tongue than for English.", "correct_answer": 3, "skill_id": 102, "difficulty_id": 2, "explanation": "Read each bar. English about 85, Science about 65, Mathematics about 90, Mother Tongue about 88. (1) is false (Science is not highest). (2) Maths is about 90, not 92, false. (3) Three subjects exceed 80 (English, Maths, Mother Tongue), not exactly 2, so false. (4) Mother Tongue (about 88) is higher than English (about 85), true. Answer is option (4).", "hints": ["Read the height of each bar against the marks axis.", "Check each statement one at a time."], "source": "Henry Park 2025 P3 Weighted Assessment 2 Q4", "image_needed": true, "image_options": false, "image_file": "q4.png", "image_page": 3, "image_bbox": [0.20, 0.20, 0.85, 0.43], "image_loc": "vertical bar graph 'Keith's Scores' below the question", "notes": "Key: option (4). Verified." }, { "n": 5, "type_id": 2, "question": "The bar graph shows the number of students in 3J who like different places of interest.\nHow many more girls than boys like Gardens by the Bay?\n[?]", "answer0": "5", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 104, "difficulty_id": 2, "explanation": "From the horizontal bar graph, for Gardens by the Bay the Girls bar reads 8 and the Boys bar reads 3. Difference = 8 - 3 = 5. So 5 more girls than boys.", "hints": ["Read the Girls bar and the Boys bar for Gardens by the Bay.", "Subtract: girls minus boys."], "source": "Henry Park 2025 P3 Weighted Assessment 2 Q5", "image_needed": true, "image_options": false, "image_file": "q5.png", "image_page": 4, "image_bbox": [0.20, 0.34, 0.82, 0.56], "image_loc": "horizontal bar graph 'Favourite Places of Interest' below the question", "notes": "Key: 8 - 3 = 5. Verified." }, { "n": 6, "type_id": 1, "question": "The bar graph shows the number of Primary 1 to 6 students in the Reading Club.\nWhich grade level has more boys than girls in the Reading Club?", "answer0": "P2", "answer1": "P4", "answer2": "P5", "answer3": "P6", "correct_answer": 1, "skill_id": 102, "difficulty_id": 2, "explanation": "For each level compare the Boys bar with the Girls bar. At P4 the Boys bar is taller than the Girls bar (the only level where boys exceed girls). Answer: P4.", "hints": ["At each level, compare the two bars (Girls vs Boys).", "Find the level where the Boys bar is taller."], "source": "Henry Park 2025 P3 Weighted Assessment 2 Q6", "image_needed": true, "image_options": false, "image_file": "q6.png", "image_page": 5, "image_bbox": [0.28, 0.24, 0.62, 0.66], "image_loc": "vertical bar graph 'Number of Students in Reading Club' below the question", "notes": "Key: P4. Converted free-response to MCQ with grade-level options; correct option index 1 (P4). Verified." }, { "n": 7, "type_id": 2, "question": "In the figure, how many of the marked angles are obtuse angles?\n[?]", "answer0": "4", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 99, "difficulty_id": 2, "explanation": "An obtuse angle is greater than a right angle (90 degrees) but less than 180 degrees. Examine each marked angle in the figure; 4 of them are obtuse. Answer: 4.", "hints": ["An obtuse angle is bigger than a square corner but not a straight line.", "Check each marked angle and tally the obtuse ones."], "source": "Henry Park 2025 P3 Weighted Assessment 2 Q7", "image_needed": true, "image_options": false, "image_file": "q7.png", "image_page": 6, "image_bbox": [0.28, 0.21, 0.60, 0.38], "image_loc": "irregular polygon with marked angles, below the question", "notes": "Key: 4. Verified." }, { "n": 8, "type_id": 0, "question": "In the grid, draw a line perpendicular to PQ, passing through point R.", "answer0": null, "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 100, "difficulty_id": 2, "explanation": "A perpendicular line meets PQ at a right angle. Draw the line through R so that it crosses PQ forming a 90-degree angle (slope reciprocal/opposite to PQ on the grid). This is a draw-on-grid task.", "hints": ["Perpendicular lines cross at a right angle (90 degrees).", "Use the grid: a line at right angles to PQ steps the opposite way."], "source": "Henry Park 2025 P3 Weighted Assessment 2 Q8", "image_needed": true, "image_options": false, "image_file": "q8.png", "image_page": 6, "image_bbox": [0.34, 0.49, 0.70, 0.72], "image_loc": "square grid with points P, Q, R; line PQ drawn", "notes": "Interactive draw-on-grid task; no value/sequence answer, set type_id 0. Key shows the perpendicular line through R drawn on the grid. SKIPPED on insert." }, { "n": 9, "type_id": 2, "question": "The figure is made up of 16 identical triangles.\nWhat fraction of the figure is shaded? Express your answer in the simplest form.\n[?]", "answer0": "1/4", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 78, "difficulty_id": 2, "explanation": "There are 16 identical triangles in total and 4 are shaded. Fraction shaded = 4/16. Simplify by dividing top and bottom by 4: 4/16 = 1/4.", "hints": ["Count the shaded triangles out of 16.", "Simplify the fraction by dividing numerator and denominator by their common factor."], "source": "Henry Park 2025 P3 Weighted Assessment 2 Q9", "image_needed": true, "image_options": false, "image_file": "q9.png", "image_page": 7, "image_bbox": [0.25, 0.22, 0.48, 0.34], "image_loc": "figure of 16 triangles (some shaded) below the question", "notes": "Key: 4/16 = 1/4. Verified." }, { "n": 10, "type_id": 2, "question": "Arrange the fractions in order. Begin with the smallest.\n7/12 3/7 1/2\n[?] , [?] , [?]", "answer0": "3/7", "answer1": "1/2", "answer2": "7/12", "answer3": null, "correct_answer": null, "skill_id": 79, "difficulty_id": 2, "explanation": "Convert to compare: 3/7 is about 0.43, 1/2 = 0.50, 7/12 is about 0.58. Smallest to largest: 3/7, 1/2, 7/12.", "hints": ["Convert each fraction to a decimal or use a common denominator.", "Write them from smallest value to largest."], "source": "Henry Park 2025 P3 Weighted Assessment 2 Q10", "image_needed": false, "image_options": false, "image_file": null, "notes": "Ordering task converted to 3-blank FIB (smallest first). Correct order 3/7, 1/2, 7/12 by value. Answer key cell printing is garbled but 7/12 is the largest; ordering smallest-first confirmed by computation." }, { "n": 11, "type_id": 2, "question": "The bar graph shows the number of fruits sold by Grocer Pan.\nHow many apples and durians did Grocer Pan sell in total?\n[?]", "answer0": "75", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 104, "difficulty_id": 2, "explanation": "From the bar graph, apples = 40 and durians = 35. Total = 40 + 35 = 75.", "hints": ["Read the apple bar and the durian bar.", "Add the two values."], "source": "Henry Park 2025 P3 Weighted Assessment 2 Q11", "image_needed": true, "image_options": false, "image_file": "q11.png", "image_page": 8, "image_bbox": [0.22, 0.27, 0.82, 0.49], "image_loc": "vertical bar graph 'Fruits sold by Grocer Pan' below the question", "notes": "Only part (a) is a value answer (40 + 35 = 75). Part (b) is a draw-the-bar task (watermelons = twice peaches = 2 x 15 = 30) which is interactive and omitted from the answer. Key Q11: a) 75, b) 60/2=30. Verified." }, { "n": 12, "type_id": 2, "question": "Siti spent 1/5 of her money on a cake and some of her money on a cookie. After buying both items, she had 3/10 of her money left. What fraction of her money did she spend on the cookie? Express your answer in the simplest form.\n[?]", "answer0": "1/2", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 81, "difficulty_id": 3, "explanation": "Money left = 3/10, so money spent = 1 - 3/10 = 7/10. The cake took 1/5 = 2/10. Cookie = total spent - cake = 7/10 - 2/10 = 5/10 = 1/2.", "hints": ["Total money is 1 (a whole). Spent = 1 - left.", "Cookie fraction = total spent - cake fraction; then simplify."], "source": "Henry Park 2025 P3 Weighted Assessment 2 Q12", "image_needed": false, "image_options": false, "image_file": null, "notes": "Key working shows 1/5 + 3/10 = 5/10 = 1/2 (cookie = 1 - 1/5 - 3/10 = 1/2). Answer 1/2. Verified." }, { "n": 13, "type_id": 2, "question": "Leo bought a toy car that cost $13.85. He paid an additional $1.50 for a box. How much did he spend in all? Leo paid the cashier with two $10-notes. How much change did he receive?\n[?] , [?]", "answer0": "$15.35", "answer1": "$4.65", "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 82, "difficulty_id": 2, "explanation": "(a) Total spent = $13.85 + $1.50 = $15.35. (b) Two $10-notes = $20. Change = $20.00 - $15.35 = $4.65.", "hints": ["Add the toy car cost and the box cost for the total.", "Change = amount paid ($20) minus total spent."], "source": "Henry Park 2025 P3 Weighted Assessment 2 Q13", "image_needed": false, "image_options": false, "image_file": null, "notes": "Two-part question combined into 2-blank FIB. Key: a) $15.35, b) $4.65. Verified." }, { "n": 14, "type_id": 2, "question": "Mr Bala prepared some gift bags. He packed 4 pens and 7 stickers in each gift bag. There was a total of 144 pens in the gift bags. How many gift bags did he prepare? How many stickers were there altogether?\n[?] , [?]", "answer0": "36", "answer1": "252", "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 76, "difficulty_id": 2, "explanation": "(a) Each bag has 4 pens and there are 144 pens, so number of bags = 144 / 4 = 36. (b) Each bag has 7 stickers, so total stickers = 36 x 7 = 252.", "hints": ["Divide total pens by pens per bag to get the number of bags.", "Multiply the number of bags by stickers per bag."], "source": "Henry Park 2025 P3 Weighted Assessment 2 Q14", "image_needed": false, "image_options": false, "image_file": null, "notes": "Two-part question combined into 2-blank FIB. Key: a) 144/4=36, b) 36x7=252. Verified." }, { "n": 15, "type_id": 2, "question": "A school had some flags for National Day. The school gave out 378 flags to the students. After that, the school bought another 1386 flags. In the end, there were 2953 flags altogether. How many flags did the school have at first?\n[?]", "answer0": "1945", "answer1": null, "answer2": null, "answer3": null, "correct_answer": null, "skill_id": 71, "difficulty_id": 3, "explanation": "Work backwards. Before buying 1386: 2953 - 1386 = 1567 flags. That 1567 was after giving out 378, so at first = 1567 + 378 = 1945 flags.", "hints": ["Work backwards from the final total of 2953.", "Subtract the flags bought, then add back the flags given out."], "source": "Henry Park 2025 P3 Weighted Assessment 2 Q15", "image_needed": false, "image_options": false, "image_file": null, "notes": "Question stem truncated in PDF ('...at first?'); restored. Key: 2953-1386=1567, 1567+378=1945. Verified." } ] }