{
  "paper": {
    "school": "CHIJ Primary (Toa Payoh)",
    "year": 2022,
    "level": "P3",
    "label": "Weighted Assessment 2",
    "source_prefix": "CHIJ 2022 P3 Weighted Assessment 2",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "The digit 3 in 8034 is in the [?] place.",
      "answer0": "ones",
      "answer1": "tens",
      "answer2": "hundreds",
      "answer3": "thousands",
      "correct_answer": 1,
      "skill_id": 66,
      "difficulty_id": 1,
      "explanation": "In 8034 the digit 3 occupies the tens position (8 thousands, 0 hundreds, 3 tens, 4 ones), so 3 is in the tens place.",
      "hints": ["Write out the place values: thousands, hundreds, tens, ones.", "Line each digit of 8034 under its place value column."],
      "source": "CHIJ 2022 P3 Weighted Assessment 2 Q1",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q1 = option 2 (tens)."
    },
    {
      "n": 2,
      "type_id": 1,
      "question": "The sum of 7856 and 97 is [?]",
      "answer0": "7759",
      "answer1": "7841",
      "answer2": "7843",
      "answer3": "7953",
      "correct_answer": 3,
      "skill_id": 70,
      "difficulty_id": 1,
      "explanation": "7856 + 97 = 7953.",
      "hints": ["Sum means add the two numbers.", "7856 + 100 = 7956, then subtract 3."],
      "source": "CHIJ 2022 P3 Weighted Assessment 2 Q2",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q2 = option 4 (7953)."
    },
    {
      "n": 3,
      "type_id": 1,
      "question": "7213 − 6508 = [?]",
      "answer0": "605",
      "answer1": "615",
      "answer2": "705",
      "answer3": "715",
      "correct_answer": 2,
      "skill_id": 70,
      "difficulty_id": 1,
      "explanation": "7213 − 6508 = 705.",
      "hints": ["Subtract using the column method, regrouping where needed.", "7213 − 6500 = 713, then subtract 8 more."],
      "source": "CHIJ 2022 P3 Weighted Assessment 2 Q3",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q3 = option 3 (705)."
    },
    {
      "n": 4,
      "type_id": 1,
      "question": "What is the product of 8 and 7?",
      "answer0": "64",
      "answer1": "56",
      "answer2": "54",
      "answer3": "15",
      "correct_answer": 1,
      "skill_id": 73,
      "difficulty_id": 1,
      "explanation": "Product means multiply: 8 × 7 = 56.",
      "hints": ["Product means multiply the two numbers.", "Recall the 8 times table: 8 × 7."],
      "source": "CHIJ 2022 P3 Weighted Assessment 2 Q4",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q4 = option 2 (56)."
    },
    {
      "n": 5,
      "type_id": 1,
      "question": "What is the missing number in the box?\n9 + [ ] = 48 ÷ 3",
      "answer0": "7",
      "answer1": "9",
      "answer2": "16",
      "answer3": "25",
      "correct_answer": 0,
      "skill_id": 76,
      "difficulty_id": 2,
      "explanation": "48 ÷ 3 = 16, so 9 + box = 16, giving box = 16 − 9 = 7.",
      "hints": ["Work out the right side first: 48 ÷ 3.", "Then find what adds to 9 to make that total."],
      "source": "CHIJ 2022 P3 Weighted Assessment 2 Q5",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Equation shown as '9 + [box] = 48 ÷ 3' on the paper; rendered inline. Key Q5 = option 1 (7)."
    },
    {
      "n": 6,
      "type_id": 1,
      "question": "There are 612 erasers altogether. Sam packs them equally into 6 boxes. How many erasers are there in each box?",
      "answer0": "12",
      "answer1": "66",
      "answer2": "102",
      "answer3": "606",
      "correct_answer": 2,
      "skill_id": 76,
      "difficulty_id": 2,
      "explanation": "Divide the total equally: 612 ÷ 6 = 102 erasers in each box.",
      "hints": ["Equal sharing into boxes means divide.", "612 ÷ 6: think 600 ÷ 6 = 100, then 12 ÷ 6 = 2."],
      "source": "CHIJ 2022 P3 Weighted Assessment 2 Q6",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q6 = option 3 (102)."
    },
    {
      "n": 7,
      "type_id": 1,
      "question": "What is the difference between the values of digit '5' and digit '7' in 5370?",
      "answer0": "430",
      "answer1": "4300",
      "answer2": "4930",
      "answer3": "4993",
      "correct_answer": 2,
      "skill_id": 66,
      "difficulty_id": 2,
      "explanation": "In 5370 the value of 5 is 5000 and the value of 7 is 70. Difference = 5000 − 70 = 4930.",
      "hints": ["Find the place value of each digit first.", "5 is in the thousands place (5000); 7 is in the tens place (70)."],
      "source": "CHIJ 2022 P3 Weighted Assessment 2 Q7",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q7 = option 3 (4930)."
    },
    {
      "n": 8,
      "type_id": 2,
      "question": "Write four thousand and sixty-three in numerals.",
      "answer0": "4063",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 67,
      "difficulty_id": 1,
      "explanation": "Four thousand and sixty-three = 4063 (4 thousands, 0 hundreds, 6 tens, 3 ones).",
      "hints": ["Four thousand is 4000.", "Sixty-three is 63; combine: 4000 + 63."],
      "source": "CHIJ 2022 P3 Weighted Assessment 2 Q8",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Paper Q8a only. Q8b (ordering) is split into a separate question entry below. Key Q8a = 4063."
    },
    {
      "n": 9,
      "type_id": 2,
      "question": "Arrange the numbers in order, beginning with the greatest.\n2785, 7258, 2587, 7528\nAns: [?], [?], [?], [?]",
      "answer0": "7528",
      "answer1": "7258",
      "answer2": "2785",
      "answer3": "2587",
      "correct_answer": null,
      "skill_id": 68,
      "difficulty_id": 2,
      "explanation": "Order from greatest to smallest: 7528, 7258, 2785, 2587.",
      "hints": ["Compare the thousands digit first.", "When thousands are equal, compare the hundreds digit."],
      "source": "CHIJ 2022 P3 Weighted Assessment 2 Q8",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "This is paper Q8b (ordering task, greatest first), recorded as a FIB with one blank per position. Source kept as Q8 (paper labels it 8b). Key Q8b = 7528, 7258, 2785, 2587."
    },
    {
      "n": 10,
      "type_id": 2,
      "question": "Multiply 439 by 9.\nThe answer is [?].",
      "answer0": "3951",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 75,
      "difficulty_id": 2,
      "explanation": "439 × 9 = 3951.",
      "hints": ["Multiply each digit by 9, working right to left and carrying.", "439 × 9 = (400 × 9) + (39 × 9) = 3600 + 351."],
      "source": "CHIJ 2022 P3 Weighted Assessment 2 Q9",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Paper Q9. Key Q9 = 3951."
    },
    {
      "n": 11,
      "type_id": 2,
      "question": "Find the quotient when 362 is divided by 5.",
      "answer0": "72",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 74,
      "difficulty_id": 2,
      "explanation": "362 ÷ 5 = 72 remainder 2. The quotient is 72.",
      "hints": ["The quotient is the whole-number result of the division.", "5 × 72 = 360, leaving a remainder of 2."],
      "source": "CHIJ 2022 P3 Weighted Assessment 2 Q10",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Paper Q10. Quotient only (remainder 2 ignored). Key Q10 = 72."
    },
    {
      "n": 12,
      "type_id": 2,
      "question": "The numbers in the diagram follow a pattern. Find the value of A and B.\nA = [?]\nB = [?]",
      "answer0": "4",
      "answer1": "36",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 73,
      "difficulty_id": 3,
      "explanation": "Inner pair multiplies to the outer number on the same arm: 2 × 6 = 12, 8 × 6 = 48, A × 6 = 24 so A = 4, and 6 × 6 = B so B = 36.",
      "hints": ["Each outer number equals the product of the two inner numbers on its arm.", "For A: A × 6 = 24. For B: 6 × 6 = B."],
      "source": "CHIJ 2022 P3 Weighted Assessment 2 Q11",
      "image_needed": true,
      "image_page": 7,
      "image_loc": "upper-left of page, circular target/wheel diagram below the question with values 12, 2, 48, 8, 6, A, 24, 6, B",
      "image_options": false,
      "image_file": "q12.png",
      "notes": "Paper Q11. Two-blank FIB (A then B). Figure required. Key Q11 A=4, B=36."
    },
    {
      "n": 13,
      "type_id": 2,
      "question": "Using the digits below, form the\ni) greatest 4-digit number\nii) smallest 3-digit number\nb) Find the sum of the above two numbers.\ni) [?]\nii) [?]\nsum [?]",
      "answer0": "7520",
      "answer1": "205",
      "answer2": "7725",
      "answer3": null,
      "correct_answer": null,
      "skill_id": 68,
      "difficulty_id": 3,
      "explanation": "Digits are 7, 0, 5, 2. Greatest 4-digit number = 7520. Smallest 3-digit number cannot start with 0, so 205. Sum = 7520 + 205 = 7725.",
      "hints": ["For the greatest number, place the largest digits first.", "A 3-digit number cannot begin with 0; the smallest non-zero digit goes first."],
      "source": "CHIJ 2022 P3 Weighted Assessment 2 Q12",
      "image_needed": true,
      "image_page": 7,
      "image_loc": "middle of page, four digit cards/scrolls showing 7, 0, 5, 2 below 'Q12'",
      "image_options": false,
      "image_file": "q13.png",
      "notes": "Paper Q12. Digits 7,0,5,2 shown on cards (figure required to display the digits). Three blanks: greatest 4-digit, smallest 3-digit, sum. Key Q12 i)7520 ii)205 b)7725."
    },
    {
      "n": 14,
      "type_id": 2,
      "question": "Michelle is 27 years old this year. Kenneth will be 26 years old in 10 years' time. How much older is Michelle than Kenneth?",
      "answer0": "11",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 71,
      "difficulty_id": 2,
      "explanation": "Kenneth's age now = 26 − 10 = 16. Michelle is 27, so she is 27 − 16 = 11 years older.",
      "hints": ["First find Kenneth's age this year by subtracting 10.", "Then subtract Kenneth's current age from Michelle's age."],
      "source": "CHIJ 2022 P3 Weighted Assessment 2 Q13",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Paper Q13. Answer is 11 (years). Key shows 26-10=16, 27-16=11 years."
    },
    {
      "n": 15,
      "type_id": 2,
      "question": "Form the smallest 3-digit odd number and divide it by 4. What answer will you get?",
      "answer0": "25 R1",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 74,
      "difficulty_id": 2,
      "explanation": "The smallest 3-digit odd number is 101. 101 ÷ 4 = 25 remainder 1.",
      "hints": ["The smallest 3-digit number is 100; the smallest odd one is 101.", "Divide 101 by 4 and state the remainder."],
      "source": "CHIJ 2022 P3 Weighted Assessment 2 Q14",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Paper Q14. Answer is 25 R1 (101 ÷ 4 = 25 remainder 1). Key Q14 = 101 ÷ 4 = 25 R1."
    },
    {
      "n": 16,
      "type_id": 2,
      "question": "There were 187 adults at a food fair. There were 58 more adults than children at the food fair. How many people were there at the food fair altogether?",
      "answer0": "316",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 71,
      "difficulty_id": 2,
      "explanation": "Children = 187 − 58 = 129. Total people = 187 + 129 = 316.",
      "hints": ["Find the number of children: 58 fewer than the adults.", "Add the adults and children together for the total."],
      "source": "CHIJ 2022 P3 Weighted Assessment 2 Q15",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Paper Q15. Key: 187-58=129, 187+129=316 people."
    },
    {
      "n": 17,
      "type_id": 2,
      "question": "Rita and Don have $5010 altogether. Yvonne and Rita have $8273 altogether. If Yvonne has $3958, how much does Don have?",
      "answer0": "695",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 71,
      "difficulty_id": 3,
      "explanation": "Rita = 8273 − 3958 = $4315. Don = 5010 − 4315 = $695.",
      "hints": ["Find Rita's amount from Yvonne and Rita's total.", "Then subtract Rita's amount from Rita and Don's total."],
      "source": "CHIJ 2022 P3 Weighted Assessment 2 Q16",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Paper Q16. Answer $695. Key: 8273-3958=4315, 5010-4315=$695."
    },
    {
      "n": 18,
      "type_id": 2,
      "question": "Asha had some beads. She used 35 beads to make a necklace. Then, she bought another 42 beads and had 105 beads left.\na) How many beads will Asha need to make 2 similar necklaces?\nb) How many beads did Asha have at first?\na) [?]\nb) [?]",
      "answer0": "70",
      "answer1": "98",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 76,
      "difficulty_id": 3,
      "explanation": "a) One necklace uses 35 beads, so 2 necklaces need 35 × 2 = 70 beads. b) Before buying 42 she had 105 − 42 = 63; before making the necklace she had 63 + 35 = 98 beads at first.",
      "hints": ["For part a), multiply the beads per necklace by 2.", "For part b), work backwards: undo buying 42, then undo using 35."],
      "source": "CHIJ 2022 P3 Weighted Assessment 2 Q17",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Paper Q17. Two parts. Key: 35x2=70 (a); 105-42=63, 63+35=98 (b)."
    }
  ]
}