{
  "paper": {
    "school": "Raffles Girls",
    "year": 2022,
    "level": "P3",
    "label": "Semestral Assessment 2",
    "source_prefix": "Raffles Girls 2022 P3 Semestral Assessment 2",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "9 km 80 m = [?] m",
      "answer0": "908",
      "answer1": "980",
      "answer2": "9080",
      "answer3": "9800",
      "correct_answer": 2,
      "skill_id": 86,
      "difficulty_id": 2,
      "explanation": "9 km = 9000 m, so 9 km 80 m = 9000 + 80 = 9080 m.",
      "hints": ["1 km = 1000 m.", "Convert the km part, then add the 80 m."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q1",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 3 (1-based) = 9080."
    },
    {
      "n": 2,
      "type_id": 1,
      "question": "3000 + 700 + 8 = [?]",
      "answer0": "3078",
      "answer1": "3708",
      "answer2": "3780",
      "answer3": "3870",
      "correct_answer": 1,
      "skill_id": 66,
      "difficulty_id": 1,
      "explanation": "3000 + 700 + 8 = 3708.",
      "hints": ["Add the place values: thousands, hundreds, ones.", "There are no tens, so the tens digit is 0."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q2",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 2 (1-based) = 3708."
    },
    {
      "n": 3,
      "type_id": 1,
      "question": "302 + 5503 = [?]",
      "answer0": "5201",
      "answer1": "5805",
      "answer2": "5905",
      "answer3": "8523",
      "correct_answer": 1,
      "skill_id": 70,
      "difficulty_id": 1,
      "explanation": "302 + 5503 = 5805.",
      "hints": ["Line up the digits by place value.", "Add ones, tens, hundreds, thousands."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q3",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 2 (1-based) = 5805."
    },
    {
      "n": 4,
      "type_id": 1,
      "question": "607 x 8 = [?]",
      "answer0": "4048",
      "answer1": "4806",
      "answer2": "4856",
      "answer3": "4930",
      "correct_answer": 2,
      "skill_id": 75,
      "difficulty_id": 2,
      "explanation": "607 x 8 = 4856.",
      "hints": ["Multiply 7 x 8, then 0 x 8, then 600 x 8.", "8 x 600 = 4800; 8 x 7 = 56; total 4856."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q4",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 3 (1-based) = 4856."
    },
    {
      "n": 5,
      "type_id": 1,
      "question": "What is the missing number in the box? 3/8 = 12/[?]",
      "answer0": "17",
      "answer1": "24",
      "answer2": "32",
      "answer3": "36",
      "correct_answer": 2,
      "skill_id": 80,
      "difficulty_id": 2,
      "explanation": "3 x 4 = 12, so multiply the denominator by 4: 8 x 4 = 32.",
      "hints": ["Find what the numerator was multiplied by: 12 / 3 = 4.", "Multiply the denominator by the same number."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q5",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 3 (1-based) = 32. Equation rendered inline."
    },
    {
      "n": 6,
      "type_id": 1,
      "question": "What is the time shown on the clock?",
      "answer0": "20 minutes to 11",
      "answer1": "40 minutes to 10",
      "answer2": "20 minutes past 10",
      "answer3": "40 minutes past 11",
      "correct_answer": 0,
      "skill_id": 89,
      "difficulty_id": 2,
      "explanation": "The hour hand is between 10 and 11 and the minute hand points to 8 (40 min), which is 20 minutes to 11.",
      "hints": ["The minute hand on 8 means 40 minutes.", "40 minutes past 10 is the same as 20 minutes to 11."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q6",
      "image_needed": true,
      "image_page": 3,
      "image_loc": "centre of page, below the question stem (clock face)",
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 1 (1-based) = 20 minutes to 11."
    },
    {
      "n": 7,
      "type_id": 1,
      "question": "What is the total volume of water in the two beakers?",
      "answer0": "720 ml",
      "answer1": "750 ml",
      "answer2": "820 ml",
      "answer3": "850 ml",
      "correct_answer": 1,
      "skill_id": 87,
      "difficulty_id": 2,
      "explanation": "Read both beaker scales and add the two volumes to get 750 ml.",
      "hints": ["Read each beaker's water level off its scale.", "Add the two volumes together."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q7",
      "image_needed": true,
      "image_page": 4,
      "image_loc": "upper-left/centre of page, below the question (two beakers, one marked 200 ml)",
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 2 (1-based) = 750 ml. Volume read off the figure."
    },
    {
      "n": 8,
      "type_id": 1,
      "question": "There were 8009 visitors at the Zoo. 4050 of the visitors were children. How many adults were there?",
      "answer0": "3949",
      "answer1": "3959",
      "answer2": "4059",
      "answer3": "4959",
      "correct_answer": 1,
      "skill_id": 71,
      "difficulty_id": 2,
      "explanation": "8009 - 4050 = 3959 adults.",
      "hints": ["Adults = total visitors - children.", "Subtract 4050 from 8009."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q8",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 2 (1-based) = 3959."
    },
    {
      "n": 9,
      "type_id": 1,
      "question": "Peter had 58 apples. He packed them into boxes of 7. How many apples were left unpacked?",
      "answer0": "7",
      "answer1": "2",
      "answer2": "8",
      "answer3": "9",
      "correct_answer": 1,
      "skill_id": 74,
      "difficulty_id": 2,
      "explanation": "58 / 7 = 8 remainder 2, so 2 apples are left unpacked.",
      "hints": ["Divide 58 by 7.", "The remainder is the number left over."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q9",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 2 (1-based) = 2."
    },
    {
      "n": 10,
      "type_id": 1,
      "question": "What is the value of 1/3 + 2/9 ?",
      "answer0": "3/9",
      "answer1": "1/4",
      "answer2": "5/9",
      "answer3": "5/18",
      "correct_answer": 2,
      "skill_id": 81,
      "difficulty_id": 2,
      "explanation": "1/3 = 3/9, so 3/9 + 2/9 = 5/9.",
      "hints": ["Make the fractions have the same denominator.", "1/3 is the same as 3/9."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q10",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 3 (1-based) = 5/9."
    },
    {
      "n": 11,
      "type_id": 1,
      "question": "How many more triangles than semi-circles are there?",
      "answer0": "6",
      "answer1": "2",
      "answer2": "3",
      "answer3": "4",
      "correct_answer": 1,
      "skill_id": 60,
      "difficulty_id": 2,
      "explanation": "The figure has 4 triangles and 2 semi-circles, so 4 - 2 = 2 more triangles.",
      "hints": ["Count the triangles, then the semi-circles.", "Subtract the smaller count from the larger."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q11",
      "image_needed": true,
      "image_page": 5,
      "image_loc": "centre-left of page, above the question text (composite figure of triangles and semi-circles)",
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 2 (1-based) = 2. Composite figure: 4 triangles, 2 semi-circles."
    },
    {
      "n": 12,
      "type_id": 1,
      "question": "Mrs Lee left her house at 11.50 a.m. for her baking class. She took 1 h 40 min to travel from her house to her baking class. She arrived 15 minutes before her class started. What time did her baking class start?",
      "answer0": "1.15 p.m.",
      "answer1": "1.30 p.m.",
      "answer2": "1.45 p.m.",
      "answer3": "1.50 p.m.",
      "correct_answer": 2,
      "skill_id": 93,
      "difficulty_id": 3,
      "explanation": "11.50 a.m. + 1 h 40 min = 1.30 p.m. (arrival). Class started 15 min later: 1.30 + 15 min = 1.45 p.m.",
      "hints": ["Add the travel time to the departure time to find the arrival time.", "She arrived 15 min before class, so add 15 min more."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q12",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 3 (1-based) = 1.45 p.m."
    },
    {
      "n": 13,
      "type_id": 1,
      "question": "Gopal bought a shirt for $45.50 and a belt for $34.90. He gave the cashier $100. How much change would Gopal get?",
      "answer0": "$19.60",
      "answer1": "$20.60",
      "answer2": "$80.40",
      "answer3": "$89.40",
      "correct_answer": 0,
      "skill_id": 83,
      "difficulty_id": 2,
      "explanation": "$45.50 + $34.90 = $80.40 spent. Change = $100 - $80.40 = $19.60.",
      "hints": ["Add the two prices first.", "Subtract the total cost from $100."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q13",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 1 (1-based) = $19.60."
    },
    {
      "n": 14,
      "type_id": 1,
      "question": "Madam Siti bought a pizza. Her daughter ate 3/8 of the pizza and her son ate 1/4 of the pizza less than her daughter. What fraction of the pizza was eaten?",
      "answer0": "1/8",
      "answer1": "5/8",
      "answer2": "1/2",
      "answer3": "1/3",
      "correct_answer": 2,
      "skill_id": 81,
      "difficulty_id": 3,
      "explanation": "Son ate 3/8 - 1/4 = 3/8 - 2/8 = 1/8. Total eaten = 3/8 + 1/8 = 4/8 = 1/2.",
      "hints": ["Find the son's share: daughter's 3/8 minus 1/4.", "Add the daughter's and son's shares."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q14",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 3 (1-based) = 1/2."
    },
    {
      "n": 15,
      "type_id": 1,
      "question": "960 people turned up for a school carnival on Saturday. There were 4 times as many people who turned up on Sunday than on Saturday. How many people turned up on both days?",
      "answer0": "240",
      "answer1": "1200",
      "answer2": "3840",
      "answer3": "4800",
      "correct_answer": 3,
      "skill_id": 76,
      "difficulty_id": 2,
      "explanation": "Sunday = 4 x 960 = 3840. Both days = 960 + 3840 = 4800.",
      "hints": ["Find Sunday's number: 4 times Saturday's.", "Add Saturday and Sunday together."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q15",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 4 (1-based) = 4800."
    },
    {
      "n": 16,
      "type_id": 1,
      "question": "A fruit seller had equal number of rambutans and mangosteens. After selling 810 mangosteens, he had 3 times as many rambutans as mangosteens left. How many rambutans did he have?",
      "answer0": "270",
      "answer1": "405",
      "answer2": "1215",
      "answer3": "2430",
      "correct_answer": 2,
      "skill_id": 76,
      "difficulty_id": 3,
      "explanation": "Let each start = x. After selling, rambutans = x, mangosteens = x - 810, and x = 3(x - 810). So x = 3x - 2430, 2430 = 2x, x = 1215.",
      "hints": ["Both started equal; only mangosteens decreased by 810.", "Set rambutans = 3 x (mangosteens left) and solve."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q16",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 3 (1-based) = 1215."
    },
    {
      "n": 17,
      "type_id": 1,
      "question": "Figure A is made up of four identical rectangles. The breadth of one rectangle is 3 cm and its length is 3 times of its breadth. Find the perimeter of Figure A.",
      "answer0": "42 cm",
      "answer1": "69 cm",
      "answer2": "72 cm",
      "answer3": "96 cm",
      "correct_answer": 0,
      "skill_id": 96,
      "difficulty_id": 3,
      "explanation": "Length = 3 x 3 = 9 cm. Four rectangles stacked form a square-ish figure 9 cm wide by 12 cm tall (4 x 3 cm). Perimeter = 2 x (9 + 12) = 42 cm.",
      "hints": ["First find the length: 3 times the 3 cm breadth.", "Work out the outline dimensions of Figure A, then add up the four sides."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q17",
      "image_needed": true,
      "image_page": 7,
      "image_loc": "below the question; right-hand 'Figure A' (4 stacked rectangles) is the figure to crop",
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 1 (1-based) = 42 cm. Figure A on right shows 4 rectangles stacked."
    },
    {
      "n": 18,
      "type_id": 1,
      "question": "Write 5049 in words.",
      "answer0": "Five thousand and forty-nine",
      "answer1": "Five thousand four hundred and nine",
      "answer2": "Five hundred and forty-nine",
      "answer3": "Fifty thousand and forty-nine",
      "correct_answer": 0,
      "skill_id": 67,
      "difficulty_id": 1,
      "explanation": "5049 = 5000 + 40 + 9 = five thousand and forty-nine (no hundreds).",
      "hints": ["There is no hundreds digit, so say 'and' after the thousands.", "40 + 9 = forty-nine."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q18",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Word answer -> converted to MCQ per spec. Key: Five thousand and forty-nine."
    },
    {
      "n": 19,
      "type_id": 2,
      "question": "Find the mass of the bottle. [?] kg [?] g",
      "answer0": "2",
      "answer1": "400",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 85,
      "difficulty_id": 2,
      "explanation": "The scale pointer reads between 2 and 3 kg at the 2 kg 400 g mark, giving a mass of 2 kg 400 g.",
      "hints": ["Read where the needle points on the kg scale.", "Each small mark between numbers is part of a kilogram."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q19",
      "image_needed": true,
      "image_page": 8,
      "image_loc": "centre-left of page, below the question (bottle on a dial weighing scale, kg)",
      "image_options": false,
      "image_file": null,
      "notes": "Key: 2 kg 400 g. Two compound-unit blanks (kg, g). Mass read off the dial."
    },
    {
      "n": 20,
      "type_id": 2,
      "question": "904 / 6 = [?]",
      "answer0": "150 R4",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 74,
      "difficulty_id": 2,
      "explanation": "904 / 6 = 150 remainder 4, since 6 x 150 = 900 and 904 - 900 = 4.",
      "hints": ["Divide step by step from the left.", "Whatever is left over after the last step is the remainder."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q20",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 150R4 (quotient 150 remainder 4). Division symbol shown as a horizontal-bar division sign in the paper."
    },
    {
      "n": 21,
      "type_id": 2,
      "question": "Express 18/24 as a fraction in its simplest form. [?]",
      "answer0": "3/4",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 78,
      "difficulty_id": 2,
      "explanation": "Divide numerator and denominator by 6: 18/24 = 3/4.",
      "hints": ["Find the largest number that divides both 18 and 24.", "Both are divisible by 6."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q21",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 3/4."
    },
    {
      "n": 22,
      "type_id": 2,
      "question": "Find the quotient of 537 / 8. [?]",
      "answer0": "61",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 74,
      "difficulty_id": 2,
      "explanation": "537 / 8 = 67 remainder 1; wait, 8 x 67 = 536, remainder 1. The quotient is 67. Per the answer key the quotient given is 61.",
      "hints": ["Divide 537 by 8.", "The quotient is the whole-number result, ignoring the remainder."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q22",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "ANSWER-KEY DISCREPANCY: key states quotient = 61, but 537/8 = 67 r1 (8x67=536). 61 appears to be a typo in the key. Used key value 61 as printed; flag for human review."
    },
    {
      "n": 23,
      "type_id": 2,
      "question": "3 h 35 min = [?] min",
      "answer0": "215",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 91,
      "difficulty_id": 2,
      "explanation": "3 h = 180 min, so 3 h 35 min = 180 + 35 = 215 min.",
      "hints": ["1 hour = 60 minutes.", "Multiply 3 by 60, then add 35."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q23",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 215."
    },
    {
      "n": 24,
      "type_id": 2,
      "question": "[?] - 3489 = 625",
      "answer0": "4114",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 71,
      "difficulty_id": 2,
      "explanation": "The missing number = 625 + 3489 = 4114.",
      "hints": ["To find the number before subtracting, add the two known values.", "625 + 3489."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q24",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 4114. Missing-number box rendered as leading [?]."
    },
    {
      "n": 25,
      "type_id": 2,
      "question": "Arrange the following numbers in order, beginning with the greatest. 4853, 7906, 7069, 4835 [?], [?], [?], [?]",
      "answer0": "7906",
      "answer1": "7069",
      "answer2": "4853",
      "answer3": "4835",
      "correct_answer": null,
      "skill_id": 68,
      "difficulty_id": 2,
      "explanation": "Greatest to smallest: 7906, 7069, 4853, 4835.",
      "hints": ["Compare the thousands digit first.", "If thousands are equal, compare the next digit."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q25",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Ordering task -> FIB with one blank per position. Key: 7906, 7069, 4853, 4835."
    },
    {
      "n": 26,
      "type_id": 2,
      "question": "Mrs Lim had 1248 g of flour. She used 300 g to bake a cake and packed the remaining flour equally into 6 packets. How much flour was there in each packet? [?] g",
      "answer0": "158",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 87,
      "difficulty_id": 2,
      "explanation": "Remaining = 1248 - 300 = 948 g. Each packet = 948 / 6 = 158 g.",
      "hints": ["Subtract the flour used first.", "Divide the remaining flour by 6."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q26",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 158."
    },
    {
      "n": 27,
      "type_id": 2,
      "question": "The sum of two numbers is 1750. The value of the smaller number is 795. What is the value of the greater number? [?]",
      "answer0": "955",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 71,
      "difficulty_id": 2,
      "explanation": "Greater number = 1750 - 795 = 955.",
      "hints": ["The two numbers add up to the sum.", "Subtract the smaller from the sum."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q27",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 955."
    },
    {
      "n": 28,
      "type_id": 2,
      "question": "Find the value of A and B. 6 A 9 x B = 4 0 7 4. A = [?], B = [?]",
      "answer0": "7",
      "answer1": "6",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 75,
      "difficulty_id": 3,
      "explanation": "6A9 x B = 4074. Trying B = 6: 679 x 6 = 4074, so A = 7 and B = 6.",
      "hints": ["The ones digit: 9 x B ends in 4, so B is 6 (9x6=54).", "Substitute B and find A from 6A9 x 6 = 4074."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q28",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: A=7, B=6. Vertical multiplication 6A9 x B = 4074; rendered inline as two blanks."
    },
    {
      "n": 29,
      "type_id": 2,
      "question": "The graph shows the number of cookies baked by 5 children. Who baked 30 more cookies than Ben? [?]",
      "answer0": "Cynthia",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 104,
      "difficulty_id": 2,
      "explanation": "Ben baked 90 cookies. 90 + 30 = 120, which matches Cynthia's bar.",
      "hints": ["Read Ben's value off the bar graph.", "Add 30 and see whose bar matches."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q29",
      "image_needed": true,
      "image_page": 12,
      "image_loc": "top of page, below the question stem (horizontal bar graph of cookies baked by Anna, Ben, Cynthia, Deepa, Eileen)",
      "image_options": false,
      "image_file": null,
      "notes": "Key: Cynthia. Word answer but a single fixed name -> FIB. Ben=90, Cynthia=120."
    },
    {
      "n": 30,
      "type_id": 2,
      "question": "Ms Chong bought a piece of cloth which was 5 m long. She used some of it to sew 5 similar towels. There was 185 cm of cloth left. What was the length of cloth used for each towel? [?] cm",
      "answer0": "63",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 87,
      "difficulty_id": 3,
      "explanation": "5 m = 500 cm. Cloth used = 500 - 185 = 315 cm. Each towel = 315 / 5 = 63 cm.",
      "hints": ["Convert 5 m to centimetres first.", "Subtract the leftover, then divide by 5."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q30",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 63."
    },
    {
      "n": 31,
      "type_id": 2,
      "question": "Mrs Teo prepared some fruit punch for a party. She poured 275 ml of fruit punch into each of the 9 similar cups for her guests. At the end of the party, she had 402 ml of fruit punch left. How much fruit punch did she prepare at first? [?] ml",
      "answer0": "2877",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 87,
      "difficulty_id": 3,
      "explanation": "Poured out = 275 x 9 = 2475 ml. Prepared = 2475 + 402 = 2877 ml.",
      "hints": ["Find the total poured into the 9 cups.", "Add the leftover fruit punch."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q31",
      "image_needed": true,
      "image_page": 13,
      "image_loc": "centre of page, below the question (bottle on left, 3x3 array of 9 cups on right)",
      "image_options": false,
      "image_file": null,
      "notes": "Key: 2877. Figure is illustrative (bottle + 9 cups); numbers are in the text."
    },
    {
      "n": 32,
      "type_id": 2,
      "question": "Write the number of flat surface(s) for the following objects. Cone: [?]. Tissue box: [?]",
      "answer0": "1",
      "answer1": "6",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 62,
      "difficulty_id": 1,
      "explanation": "A cone has 1 flat surface (its circular base). A box (cuboid) has 6 flat surfaces.",
      "hints": ["A cone has one flat circular face.", "Count the faces of the rectangular box."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q32",
      "image_needed": true,
      "image_page": 13,
      "image_loc": "lower half of page, table with two object photos (ice-cream cone, tissue box)",
      "image_options": false,
      "image_file": null,
      "notes": "Key: Cone=1, Box=6. Two blanks for the two table rows (cone then box)."
    },
    {
      "n": 33,
      "type_id": 2,
      "question": "Arrange the following fractions from the smallest to the biggest. 1/8, 3/4, 5/12 [?], [?], [?]",
      "answer0": "1/8",
      "answer1": "5/12",
      "answer2": "3/4",
      "answer3": null,
      "correct_answer": null,
      "skill_id": 79,
      "difficulty_id": 3,
      "explanation": "Common denominator 24: 1/8=3/24, 5/12=10/24, 3/4=18/24. Smallest to biggest: 1/8, 5/12, 3/4.",
      "hints": ["Convert all three to a common denominator.", "Use 24 as the common denominator."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q33",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Ordering task -> FIB with one blank per position. Key: 1/8, 5/12, 3/4."
    },
    {
      "n": 34,
      "type_id": 2,
      "question": "Yilin went to a cake shop to buy some muffins. 1 muffin for $1.80. 4 muffins for $7.00. What was the maximum number of muffins that Yilin can buy with $50?",
      "answer0": "28",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 83,
      "difficulty_id": 3,
      "explanation": "Cheapest per muffin is the 4-for-$7.00 deal. 7 sets of 4 = 28 muffins cost 7 x $7.00 = $49.00. Remaining $1.00 cannot buy another at $1.80, so the maximum is 28.",
      "hints": ["The 4-for-$7 deal is cheaper per muffin than $1.80 each.", "See how many $7 sets fit in $50, then check leftover money."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q34",
      "image_needed": true,
      "image_page": 14,
      "image_loc": "centre of page, below the question (muffin icon + price sign: '1 muffin for $1.80 / 4 muffins for $7.00')",
      "image_options": false,
      "image_file": null,
      "notes": "Key: 28. Prices are on the figure (sign); transcribed into the stem so the question is self-contained."
    },
    {
      "n": 35,
      "type_id": 2,
      "question": "Fadilah needed 45 min to travel from her house to the cinema. When she arrived at the cinema, the time shown on her watch was 12.20 p.m. Her watch was 10 minutes faster. What was the actual time she left her house? [?] a.m.",
      "answer0": "11.25",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 93,
      "difficulty_id": 3,
      "explanation": "Watch shows 12.20 p.m. but is 10 min fast, so actual arrival = 12.10 p.m. Subtract the 45 min travel: 12.10 p.m. - 45 min = 11.25 a.m.",
      "hints": ["First correct the watch time by removing the 10 fast minutes.", "Then subtract the 45 min travel time to find when she left."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q35",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 11.25am. Answer line is labelled a.m. on the paper."
    },
    {
      "n": 36,
      "type_id": 2,
      "question": "Study the pattern. The figures are made up of sticks. Figure 1 uses 4 sticks, Figure 2 uses 7 sticks, Figure 3 uses 10 sticks. How many sticks are there in Figure 7? [?]",
      "answer0": "22",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 69,
      "difficulty_id": 2,
      "explanation": "The pattern adds 3 sticks each figure: 4, 7, 10, 13, 16, 19, 22. Figure 7 = 22 sticks. (Or 4 + 3 x 6 = 22.)",
      "hints": ["Find how many sticks are added each time.", "Each figure adds 3 sticks."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q36",
      "image_needed": true,
      "image_page": 16,
      "image_loc": "top of page, below the stem (Figures 1-3 of joined squares made of sticks, plus a value table)",
      "image_options": false,
      "image_file": null,
      "notes": "Key: 22. Counts 4/7/10 transcribed into stem; figure and table are illustrative."
    },
    {
      "n": 37,
      "type_id": 2,
      "question": "Ann had 905 stamps and Bala had 299 stamps. Ann had 230 more stamps than Colin. How many more stamps did Colin have than Bala? [?]",
      "answer0": "376",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 71,
      "difficulty_id": 3,
      "explanation": "Colin = 905 - 230 = 675. Colin - Bala = 675 - 299 = 376.",
      "hints": ["Find Colin's stamps: 230 fewer than Ann's.", "Subtract Bala's stamps from Colin's."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q37",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 376. [3 marks]."
    },
    {
      "n": 38,
      "type_id": 2,
      "question": "The graph shows the distance walked by 5 pupils in 15 minutes. (a) How far did Pupil A walk? (b) Pupil D walked twice as far as Pupil E. How far did Pupil E walk? (a) [?] m, (b) [?] m",
      "answer0": "614",
      "answer1": "255",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 104,
      "difficulty_id": 3,
      "explanation": "(a) Pupil A's bar reads 614 m. (b) Pupil D walked 510 m; wait Pupil D = 510 m, so E = 510 / 2 = 255 m.",
      "hints": ["Read Pupil A's bar height for part (a).", "Pupil E is half of Pupil D's distance."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q38",
      "image_needed": true,
      "image_page": 18,
      "image_loc": "top half of page, below the stem (vertical bar graph, Distance (m) vs Pupil A-E)",
      "image_options": false,
      "image_file": null,
      "notes": "Key: a)614m b)255m. Two blanks (units m). Pupil D bar ~510 m -> E=255 m."
    },
    {
      "n": 39,
      "type_id": 2,
      "question": "Mrs Lim baked 340 chocolate pies. She packed them equally into boxes of 9. What was the least number of boxes needed by Mrs Lim if she wanted to pack all the chocolate pies into boxes? [?]",
      "answer0": "38",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 76,
      "difficulty_id": 3,
      "explanation": "340 / 9 = 37 remainder 7. The 7 leftover pies still need a box, so 37 + 1 = 38 boxes.",
      "hints": ["Divide 340 by 9 and look at the remainder.", "Leftover pies need one more box."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q39",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 38. [3 marks]."
    },
    {
      "n": 40,
      "type_id": 2,
      "question": "Mary had 29 coins. She had 15 one-dollar coins and the rest were fifty-cents and ten-cents coins. She had $20.80 altogether. How many fifty-cents coins did Mary have? [?]",
      "answer0": "11",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 83,
      "difficulty_id": 3,
      "explanation": "15 one-dollar coins = $15.00, leaving $5.80 in 14 coins (50c and 10c). If all 14 were 10c that is $1.40; the extra $4.40 comes from swapping 10c for 50c (each swap adds 40c): 440/40 = 11 fifty-cent coins.",
      "hints": ["Take away the value of the 15 dollar coins first.", "The remaining 14 coins make up $5.80; use guess-and-check or the swap method."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q40",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 11. [3 marks]. 11 fifty-cent (=$5.50) + 3 ten-cent (=$0.30) = $5.80, total 14 coins."
    },
    {
      "n": 41,
      "type_id": 2,
      "question": "Siti had a total of 890 local and foreign stamps. She gave away 130 local stamps and collected another 280 foreign stamps. In the end, she had the same number of local and foreign stamps. (a) How many more local than foreign stamps did Siti have at first? (b) How many foreign stamps did Siti have at first? (a) [?], (b) [?]",
      "answer0": "410",
      "answer1": "240",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 71,
      "difficulty_id": 3,
      "explanation": "End total = 890 - 130 + 280 = 1040, so each is 520. Local at first = 520 + 130 = 650; foreign at first = 520 - 280 = 240. (a) 650 - 240 = 410 more local. (b) 240 foreign at first.",
      "hints": ["Work out the final totals (equal halves) after the changes.", "Reverse each change to find the original local and foreign counts."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q41",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: a)410 b)240. Two blanks. (a)[1 mark] (b)[3 marks]."
    },
    {
      "n": 42,
      "type_id": 2,
      "question": "The figure is made up of 3 identical rectangles and 1 square. The perimeter of the square is 36 cm. The length of one rectangle is 4 cm longer than its breadth. Find the area of the shaded rectangle. [?]",
      "answer0": "3 1/2",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 97,
      "difficulty_id": 3,
      "explanation": "Square side = 36 / 4 = 9 cm. The 3 rectangles sit under the square sharing its 9 cm width, so each rectangle's length = 9 / 3 = 3 cm, and breadth = 3 - 4 (giving non-integer). Per the key the shaded rectangle's area works out to 3 1/2 cm^2.",
      "hints": ["Find the square's side from its perimeter.", "Use the square's side and the length-vs-breadth relationship to size each rectangle."],
      "source": "Raffles Girls 2022 P3 Semestral Assessment 2 Q42",
      "image_needed": true,
      "image_page": 22,
      "image_loc": "centre of page, below the stem (square on top, 3 rectangles below; rightmost rectangle shaded)",
      "image_options": false,
      "image_file": null,
      "notes": "ANSWER-KEY VALUE: 3 1/2 (mixed number, likely cm^2). [4 marks]. Geometry depends on the figure; recorded key value verbatim. Flag for human verification of units/derivation."
    }
  ]
}