{
  "paper": {
    "school": "Nanyang Primary School",
    "year": 2022,
    "level": "P3",
    "label": "Weighted Assessment 1",
    "source_prefix": "Nanyang 2022 P3 Weighted Assessment 1",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "In 5690, which digit is in the hundreds place?",
      "answer0": "0",
      "answer1": "5",
      "answer2": "6",
      "answer3": "9",
      "correct_answer": 2,
      "skill_id": 66,
      "difficulty_id": 1,
      "explanation": "In 5690 the digits are 5 (thousands), 6 (hundreds), 9 (tens), 0 (ones). The hundreds digit is 6.",
      "hints": ["Write out the place value of each digit from the right.", "Thousands, hundreds, tens, ones."],
      "source": "Nanyang 2022 P3 Weighted Assessment 1 Q1",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": ""
    },
    {
      "n": 2,
      "type_id": 1,
      "question": "What is the missing number? [?] is 100 more than 8930.",
      "answer0": "8830",
      "answer1": "8940",
      "answer2": "9030",
      "answer3": "9930",
      "correct_answer": 2,
      "skill_id": 70,
      "difficulty_id": 1,
      "explanation": "100 more than 8930 is 8930 + 100 = 9030.",
      "hints": ["Add 100 to 8930.", "Only the hundreds digit changes."],
      "source": "Nanyang 2022 P3 Weighted Assessment 1 Q2",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Stem shows an empty box meaning the missing number; rendered as [?]."
    },
    {
      "n": 3,
      "type_id": 1,
      "question": "The sum of two 2-digit numbers is 88. The difference between the two numbers is more than 20 but less than 40. The digits used to form the greater number and the smaller number are the same. What is the smaller number?",
      "answer0": "17",
      "answer1": "26",
      "answer2": "35",
      "answer3": "44",
      "correct_answer": 1,
      "skill_id": 71,
      "difficulty_id": 3,
      "explanation": "The two numbers use the same digits, so they are 26 and 62. Their sum is 88 and their difference is 62 - 26 = 36, which is between 20 and 40. The smaller number is 26.",
      "hints": ["The two numbers must use the same two digits (reversed).", "Check which pair sums to 88 with a difference between 20 and 40."],
      "source": "Nanyang 2022 P3 Weighted Assessment 1 Q3",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": ""
    },
    {
      "n": 4,
      "type_id": 2,
      "question": "Write the numbers in numerals. a) Five thousand, nine hundred and eighty-one [?] b) Six thousand and seventy-three [?]",
      "answer0": "5981",
      "answer1": "6073",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 67,
      "difficulty_id": 1,
      "explanation": "a) Five thousand, nine hundred and eighty-one = 5981. b) Six thousand and seventy-three = 6073 (no hundreds, so a 0 in the hundreds place).",
      "hints": ["Write the thousands, hundreds, tens and ones in order.", "Use 0 as a placeholder when a place has no value."],
      "source": "Nanyang 2022 P3 Weighted Assessment 1 Q4",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Two blanks: answer0 = part a, answer1 = part b."
    },
    {
      "n": 5,
      "type_id": 2,
      "question": "Form the smallest 4-digit even number with the following digits. Each digit can only be used once. [?]",
      "answer0": "2074",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 68,
      "difficulty_id": 3,
      "explanation": "Digits are 4, 0, 7, 2. For the smallest number the leading digit must be the smallest non-zero digit (2) and the last digit must be even. Trying 2074 (ends in even 4) is smaller than other even options, so the answer is 2074.",
      "hints": ["The last digit of an even number must be 0, 2 or 4.", "Use the smallest non-zero digit first (a number can't start with 0)."],
      "source": "Nanyang 2022 P3 Weighted Assessment 1 Q5",
      "image_needed": true,
      "image_options": false,
      "image_file": "q5.png",
      "image_page": 2,
      "image_loc": "middle of page, four star/badge shapes containing the digits 4, 0, 7, 2",
      "notes": "Digits given inside four decorative star shapes: 4, 0, 7, 2."
    },
    {
      "n": 6,
      "type_id": 2,
      "question": "Look at the number pattern. 8453, 8253, 8053, [?], 7653. What is the missing number?",
      "answer0": "7853",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 69,
      "difficulty_id": 2,
      "explanation": "Each number is 200 less than the previous: 8453, 8253, 8053, then 8053 - 200 = 7853, then 7653.",
      "hints": ["Find the difference between consecutive numbers.", "The pattern decreases by 200 each time."],
      "source": "Nanyang 2022 P3 Weighted Assessment 1 Q6",
      "image_needed": true,
      "image_options": false,
      "image_file": "q6.png",
      "image_page": 3,
      "image_loc": "top of page, row of five linked circles showing 8453, 8253, 8053, ?, 7653",
      "notes": "Pattern shown as five connected circles; the fourth circle has '?'."
    },
    {
      "n": 7,
      "type_id": 2,
      "question": "Mrs Lim baked 239 more pies than cookies. She then gave away 2541 cookies and had 1981 cookies left. How many pies did she bake? [?]",
      "answer0": "4761",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 71,
      "difficulty_id": 2,
      "explanation": "Cookies baked = 2541 + 1981 = 4522. Pies = 4522 + 239 = 4761.",
      "hints": ["First find how many cookies she baked: gave away + left.", "Then add 239 because there were 239 more pies than cookies."],
      "source": "Nanyang 2022 P3 Weighted Assessment 1 Q7",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": ""
    },
    {
      "n": 8,
      "type_id": 2,
      "question": "Paul had 3 shirts and 3 pairs of shorts. He had a red shirt, a purple shirt and a green shirt. He had a pair of white shorts, a pair of black shorts and a pair of yellow shorts. In how many different ways could Paul match a shirt and a pair of shorts? [?]",
      "answer0": "9",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 73,
      "difficulty_id": 2,
      "explanation": "Each of the 3 shirts can be paired with each of the 3 pairs of shorts: 3 x 3 = 9 different ways.",
      "hints": ["Each shirt can go with every pair of shorts.", "Multiply the number of shirts by the number of pairs of shorts."],
      "source": "Nanyang 2022 P3 Weighted Assessment 1 Q8",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": ""
    },
    {
      "n": 9,
      "type_id": 2,
      "question": "Jane has 4153 marbles. Siva has 1122 marbles fewer than Jane. Jane has 1739 marbles fewer than Liz. (a) How many marbles does Siva have? (b) How many marbles does Liz have? [?] [?]",
      "answer0": "3031",
      "answer1": "5892",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 71,
      "difficulty_id": 2,
      "explanation": "(a) Siva = 4153 - 1122 = 3031. (b) Jane has 1739 fewer than Liz, so Liz = 4153 + 1739 = 5892.",
      "hints": ["Siva has fewer than Jane, so subtract.", "Jane has fewer than Liz, so Liz has more than Jane: add."],
      "source": "Nanyang 2022 P3 Weighted Assessment 1 Q9",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Two blanks: answer0 = part a (Siva), answer1 = part b (Liz)."
    }
  ]
}