{
  "paper": {
    "school": "Nanyang Primary School",
    "year": 2025,
    "level": "P5",
    "label": "Weighted Assessment 1",
    "source_prefix": "Nanyang 2025 P5 Weighted Assessment 1",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "Which of the following is five million, three hundred and six thousand, two hundred and eighteen in numerals?",
      "answer0": "5 036 218",
      "answer1": "5 306 218",
      "answer2": "5 306 280",
      "answer3": "5 360 218",
      "correct_answer": 1,
      "skill_id": 149,
      "difficulty_id": 1,
      "explanation": "Five million = 5 000 000; three hundred and six thousand = 306 000; two hundred and eighteen = 218. Sum = 5 306 218. Answer: 5 306 218.",
      "hints": ["Write each named part separately, then add.", "Three hundred and six thousand is 306 000, not 360 000."],
      "source": "Nanyang 2025 P5 Weighted Assessment 1 Q1",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Answer key: option 2 (5 306 218)."
    },
    {
      "n": 2,
      "type_id": 1,
      "question": "In 94 387, which digit is in the thousands place?",
      "answer0": "7",
      "answer1": "9",
      "answer2": "3",
      "answer3": "4",
      "correct_answer": 3,
      "skill_id": 105,
      "difficulty_id": 1,
      "explanation": "Reading 94 387 from the right: 7 ones, 8 tens, 3 hundreds, 4 thousands, 9 ten thousands. The thousands digit is 4. Answer: 4.",
      "hints": ["Label the places from the right: ones, tens, hundreds, thousands.", "Find the digit in the thousands position of 94 387."],
      "source": "Nanyang 2025 P5 Weighted Assessment 1 Q2",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Answer key: option 4 (4)."
    },
    {
      "n": 3,
      "type_id": 1,
      "question": "What is the value of \\(56 - (9 + 7) \\div 8 \\times 2\\)?",
      "answer0": "10",
      "answer1": "52",
      "answer2": "55",
      "answer3": "108",
      "correct_answer": 1,
      "skill_id": 156,
      "difficulty_id": 2,
      "explanation": "Brackets first: \\(9 + 7 = 16\\). Then left to right for \\(\\div\\) and \\(\\times\\): \\(16 \\div 8 = 2\\), \\(2 \\times 2 = 4\\). Finally \\(56 - 4 = 52\\). Answer: 52.",
      "hints": ["Work out the bracket, then do \\(\\div\\) and \\(\\times\\) from left to right.", "\\(16 \\div 8 \\times 2 = 4\\), then subtract from 56."],
      "source": "Nanyang 2025 P5 Weighted Assessment 1 Q3",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Answer key: option 2 (52)."
    },
    {
      "n": 4,
      "type_id": 1,
      "question": "Find the value of \\(502 \\times 800\\).",
      "answer0": "40 160",
      "answer1": "41 600",
      "answer2": "401 600",
      "answer3": "416 000",
      "correct_answer": 2,
      "skill_id": 151,
      "difficulty_id": 1,
      "explanation": "\\(502 \\times 8 = 4016\\), then \\(\\times 100\\) for the two zeros in 800: \\(4016 \\times 100 = 401\\,600\\). Answer: 401 600.",
      "hints": ["Multiply 502 by 8, then attach the two zeros from 800.", "\\(502 \\times 8 = 4016\\)."],
      "source": "Nanyang 2025 P5 Weighted Assessment 1 Q4",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Answer key: option 3 (401 600)."
    },
    {
      "n": 5,
      "type_id": 1,
      "question": "At first, Mrs Quek had 600 tarts. She gave 180 tarts to Mdm Raju and received 100 tarts from Miss Siti. She then packed all the tarts into bags of 20 tarts each. How many such bags of tarts did Mrs Quek have in the end?",
      "answer0": "21",
      "answer1": "26",
      "answer2": "34",
      "answer3": "44",
      "correct_answer": 1,
      "skill_id": 152,
      "difficulty_id": 2,
      "explanation": "Tarts remaining = \\(600 - 180 + 100 = 520\\). Bags = \\(520 \\div 20 = 26\\). Answer: 26.",
      "hints": ["Find how many tarts she has after giving away 180 and receiving 100.", "Divide that total by 20."],
      "source": "Nanyang 2025 P5 Weighted Assessment 1 Q5",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Answer key: option 2 (26)."
    },
    {
      "n": 6,
      "type_id": 1,
      "question": "Kevin had some clips, marbles and stickers. He had 294 clips. He had 7 times as many clips as marbles. He had half as many stickers as clips. How many more stickers than marbles did he have?",
      "answer0": "42",
      "answer1": "105",
      "answer2": "147",
      "answer3": "252",
      "correct_answer": 1,
      "skill_id": 152,
      "difficulty_id": 2,
      "explanation": "Marbles = \\(294 \\div 7 = 42\\). Stickers = \\(294 \\div 2 = 147\\). More stickers than marbles = \\(147 - 42 = 105\\). Answer: 105.",
      "hints": ["Clips are 7 times the marbles, so marbles = 294 \\(\\div\\) 7.", "Stickers = half of clips; subtract marbles from stickers."],
      "source": "Nanyang 2025 P5 Weighted Assessment 1 Q6",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Answer key: option 2 (105)."
    },
    {
      "n": 7,
      "type_id": 1,
      "question": "What is the missing number in the pattern?<br>\\(950, 947, 941, 950, 938, 923, 941, 920, 896, 923, \\text{____________}, 860\\)",
      "answer0": "893",
      "answer1": "896",
      "answer2": "950",
      "answer3": "953",
      "correct_answer": 0,
      "skill_id": 108,
      "difficulty_id": 3,
      "explanation": "The pattern is three interleaved sequences taken every third term. The sequence at positions 2, 5, 8, 11 is 947, 938, 920, ? with differences \\(-9, -18, -27\\) (each step subtracts 9 more). The next difference is \\(-27\\), so the missing term = \\(920 - 27 = 893\\). Answer: 893.",
      "hints": ["Take every third number to find separate sequences.", "The sequence 947, 938, 920, ... drops by 9, then 18, then 27."],
      "source": "Nanyang 2025 P5 Weighted Assessment 1 Q7",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Answer key: option 1 (893)."
    },
    {
      "n": 8,
      "type_id": 2,
      "question": "Express \\(\\dfrac{3}{4}\\) as a decimal.<br>Ans: [?]",
      "answer0": "0.75",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 158,
      "difficulty_id": 1,
      "explanation": "\\(\\dfrac{3}{4} = \\dfrac{75}{100} = 0.75\\). Answer: 0.75.",
      "hints": ["Find an equivalent fraction with denominator 100.", "\\(\\dfrac{3}{4} = \\dfrac{75}{100}\\)."],
      "source": "Nanyang 2025 P5 Weighted Assessment 1 Q8",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Q8(a). Decimal answer -> FIB. Answer key: 0.75."
    },
    {
      "n": 9,
      "type_id": 2,
      "question": "Express \\(\\dfrac{6}{7}\\) as a decimal, correct to 2 decimal places.<br>Ans: [?]",
      "answer0": "0.86",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 158,
      "difficulty_id": 2,
      "explanation": "\\(6 \\div 7 = 0.857...\\) Rounded to 2 decimal places gives 0.86. Answer: 0.86.",
      "hints": ["Divide 6 by 7.", "Round 0.857... to two decimal places."],
      "source": "Nanyang 2025 P5 Weighted Assessment 1 Q8",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Q8(b). Decimal answer -> FIB. Answer key: 0.86."
    },
    {
      "n": 10,
      "type_id": 1,
      "question": "Ismail had 14 kg of flour. He packed all the flour equally into 8 packets. How much flour was there in each packet? Express your answer as a mixed number in its simplest form.",
      "answer0": "\\(1\\dfrac{3}{4}\\) kg",
      "answer1": "\\(1\\dfrac{1}{2}\\) kg",
      "answer2": "\\(1\\dfrac{3}{8}\\) kg",
      "answer3": "\\(2\\dfrac{1}{4}\\) kg",
      "correct_answer": 0,
      "skill_id": 157,
      "difficulty_id": 1,
      "explanation": "Each packet = \\(14 \\div 8 = \\dfrac{14}{8} = \\dfrac{7}{4} = 1\\dfrac{3}{4}\\) kg. Answer: \\(1\\dfrac{3}{4}\\) kg.",
      "hints": ["Divide 14 by 8 and simplify the fraction.", "\\(\\dfrac{14}{8} = \\dfrac{7}{4}\\)."],
      "source": "Nanyang 2025 P5 Weighted Assessment 1 Q9",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Q9. Mixed-number answer -> MCQ. No answer key for this question (key only printed Q1-8); solved: 14/8 = 1 3/4 kg."
    },
    {
      "n": 11,
      "type_id": 2,
      "question": "A box of cookies at Lee Bakery costs $25. Company A bought 200 such boxes for an event and Company B bought 80 boxes to donate to charity. Find the total amount of money collected by Lee Bakery from the sale of the boxes of cookies to Company A and Company B.<br>Ans: $[?]",
      "answer0": "7000",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 152,
      "difficulty_id": 1,
      "explanation": "Total boxes = \\(200 + 80 = 280\\). Total money = \\(280 \\times $25 = $7000\\). Answer: $7000.",
      "hints": ["Add the boxes bought by both companies.", "Multiply the total boxes by $25."],
      "source": "Nanyang 2025 P5 Weighted Assessment 1 Q10",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Q10. Integer/money answer -> FIB. No answer key for this question (key only printed Q1-8); solved: 280 x $25 = $7000."
    },
    {
      "n": 12,
      "type_id": 2,
      "question": "Mr Tan sold three types of tickets for a concert. The table shows the price of each type of ticket and the number of ticket A and ticket B sold.<br>Ticket A: $12 each, 40 sold<br>Ticket B: $7 each, 36 sold<br>Ticket C: $3 each, ? sold<br>The total amount of money collected from the sale of ticket A and ticket B was four times the amount of money collected from the sale of ticket C. How many ticket C were sold by Mr Tan?<br>Ans: [?]",
      "answer0": "61",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 152,
      "difficulty_id": 3,
      "explanation": "Money from A = \\(40 \\times $12 = $480\\). Money from B = \\(36 \\times $7 = $252\\). A + B = \\($480 + $252 = $732\\). This is 4 times the money from C, so money from C = \\($732 \\div 4 = $183\\). Number of ticket C = \\($183 \\div $3 = 61\\). Answer: 61.",
      "hints": ["Find the money from A and from B, then add them.", "That total is 4 times C's takings; divide by 4, then by $3 to get the number of tickets."],
      "source": "Nanyang 2025 P5 Weighted Assessment 1 Q11",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Q11. Table transcribed into the stem so no image is needed. Integer answer -> FIB. No answer key for this question (key only printed Q1-8); solved: ($480+$252)/4/$3 = 61."
    },
    {
      "n": 13,
      "type_id": 2,
      "question": "Every day, Jing Han placed either a $2-note or a $5-note into her piggy bank which was empty at first. Every 20 days, her father also placed a $10-note into her piggy bank. At the end of 50 days, she had $222 in her piggy bank. How many of the notes in her piggy bank at the end of 50 days were $2-notes?<br>Ans: [?]",
      "answer0": "16",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 152,
      "difficulty_id": 3,
      "explanation": "In 50 days the father adds a $10-note on day 20 and day 40, contributing \\(2 \\times $10 = $20\\). So Jing Han's own notes total \\($222 - $20 = $202\\) over 50 days. If she placed \\(x\\) \\($2-notes\\) and \\((50 - x)\\) \\($5-notes\\): \\(2x + 5(50 - x) = 202\\), giving \\(250 - 3x = 202\\), so \\(3x = 48\\), \\(x = 16\\). Answer: 16 \\($2-notes\\).",
      "hints": ["Subtract the father's $20 (two $10-notes) from $222 to get Jing Han's $202 over 50 daily notes.", "With 50 notes: \\(2x + 5(50 - x) = 202\\)."],
      "source": "Nanyang 2025 P5 Weighted Assessment 1 Q12",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Q12. Integer answer -> FIB. No answer key for this question (key only printed Q1-8); solved: father adds 2x$10=$20, so 2x+5(50-x)=202 -> x=16 two-dollar notes."
    }
  ]
}