{
  "paper": {
    "school": "Anglo-Chinese School (Junior)",
    "year": 2024,
    "level": "P5",
    "label": "Bite-Sized Assessment 1",
    "source_prefix": "Anglo-Chinese School (Junior) 2024 P5 Bite-Sized Assessment 1",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "9 060 450 = 9 000 000 + ________ 450",
      "answer0": "60",
      "answer1": "6000",
      "answer2": "60 000",
      "answer3": "600 000",
      "correct_answer": 2,
      "skill_id": 149,
      "difficulty_id": 1,
      "explanation": "9 060 450 = 9 000 000 + 60 000 + 450. The missing value in the blank before 450 is 60 000.",
      "hints": ["Look at the place value of the 6 in 9 060 450.", "The 6 is in the ten-thousands place, so it stands for 60 000."],
      "source": "Anglo-Chinese School (Junior) 2024 P5 Bite-Sized Assessment 1 Q1",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 3 (60 000)."
    },
    {
      "n": 2,
      "type_id": 1,
      "question": "Find the value of 16 + 40 ÷ 4 × 2.",
      "answer0": "7",
      "answer1": "21",
      "answer2": "28",
      "answer3": "36",
      "correct_answer": 3,
      "skill_id": 155,
      "difficulty_id": 1,
      "explanation": "Do division and multiplication first, left to right: 40 ÷ 4 = 10, then 10 × 2 = 20. Then 16 + 20 = 36.",
      "hints": ["Multiply and divide before adding.", "Work 40 ÷ 4 × 2 from left to right."],
      "source": "Anglo-Chinese School (Junior) 2024 P5 Bite-Sized Assessment 1 Q2",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 4 (36)."
    },
    {
      "n": 3,
      "type_id": 1,
      "question": "What is the value of \\(\\dfrac{4}{5} \\times \\dfrac{3}{10}\\)?",
      "answer0": "\\(\\dfrac{8}{3}\\)",
      "answer1": "\\(\\dfrac{11}{10}\\)",
      "answer2": "\\(\\dfrac{7}{15}\\)",
      "answer3": "\\(\\dfrac{6}{25}\\)",
      "correct_answer": 3,
      "skill_id": 161,
      "difficulty_id": 1,
      "explanation": "Multiply numerators and denominators: \\(\\dfrac{4}{5} \\times \\dfrac{3}{10} = \\dfrac{12}{50} = \\dfrac{6}{25}\\).",
      "hints": ["Multiply the top numbers and the bottom numbers.", "Simplify 12/50 by dividing by 2."],
      "source": "Anglo-Chinese School (Junior) 2024 P5 Bite-Sized Assessment 1 Q3",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Fraction options so MCQ. Key: option 4 (6/25)."
    },
    {
      "n": 4,
      "type_id": 1,
      "question": "10 scouts were each given 10 funfair tickets to sell. 4 of the scouts sold 7 tickets each. The rest of the scouts sold all their tickets. Which one of the following represents the correct way to find how many tickets were left?",
      "answer0": "(100 − 4) × 7 − (6 × 10)",
      "answer1": "100 − (4 × 7) − (6 × 10)",
      "answer2": "(100 − 4 × 7 − 6) × 10",
      "answer3": "100 − 4 × (7 − 6) × 10",
      "correct_answer": 1,
      "skill_id": 155,
      "difficulty_id": 2,
      "explanation": "Total tickets = 10 × 10 = 100. The 4 scouts sold 4 × 7 = 28 tickets; the other 6 scouts sold all 6 × 10 = 60 tickets. Tickets left = 100 − (4 × 7) − (6 × 10) = 100 − 28 − 60 = 12.",
      "hints": ["Total tickets are 100; subtract what each group sold.", "The 4 scouts sold 4 × 7; the remaining 6 scouts sold 6 × 10."],
      "source": "Anglo-Chinese School (Junior) 2024 P5 Bite-Sized Assessment 1 Q4",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 2 (100 − (4 × 7) − (6 × 10))."
    },
    {
      "n": 5,
      "type_id": 1,
      "question": "A box with a mass of 12 kg is 5 times as heavy as a bag. What is the mass of the bag?",
      "answer0": "\\(\\dfrac{5}{12}\\) kg",
      "answer1": "\\(\\dfrac{7}{12}\\) kg",
      "answer2": "\\(1\\dfrac{5}{7}\\) kg",
      "answer3": "\\(2\\dfrac{2}{5}\\) kg",
      "correct_answer": 3,
      "skill_id": 157,
      "difficulty_id": 1,
      "explanation": "The bag's mass = 12 ÷ 5 = \\(\\dfrac{12}{5} = 2\\dfrac{2}{5}\\) kg.",
      "hints": ["The box is 5 times the bag, so divide the box's mass by 5.", "12 ÷ 5 = 2 remainder 2, which is 2 2/5."],
      "source": "Anglo-Chinese School (Junior) 2024 P5 Bite-Sized Assessment 1 Q5",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Mixed-number answer so MCQ. Key: option 4 (2 2/5 kg)."
    },
    {
      "n": 6,
      "type_id": 2,
      "question": "Divide 2610 by 30.<br>[?]",
      "answer0": "87",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 151,
      "difficulty_id": 1,
      "explanation": "2610 ÷ 30 = 261 ÷ 3 = 87.",
      "hints": ["Divide both numbers by 10 first: 261 ÷ 3.", "261 ÷ 3 = 87."],
      "source": "Anglo-Chinese School (Junior) 2024 P5 Bite-Sized Assessment 1 Q6",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 87."
    },
    {
      "n": 7,
      "type_id": 2,
      "question": "What must be added to 3058 to get half a million?<br>[?]",
      "answer0": "496942",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 152,
      "difficulty_id": 2,
      "explanation": "Half a million = 500 000. The number to add = 500 000 − 3058 = 496 942.",
      "hints": ["Half a million is 500 000.", "Subtract 3058 from 500 000."],
      "source": "Anglo-Chinese School (Junior) 2024 P5 Bite-Sized Assessment 1 Q7",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 496 942."
    },
    {
      "n": 8,
      "type_id": 1,
      "question": "Find the value of 14 ÷ 4. Express your answer as a mixed number in its simplest form.",
      "answer0": "\\(3\\dfrac{1}{2}\\)",
      "answer1": "\\(3\\dfrac{2}{4}\\)",
      "answer2": "\\(3\\dfrac{1}{4}\\)",
      "answer3": "\\(\\dfrac{14}{4}\\)",
      "correct_answer": 0,
      "skill_id": 157,
      "difficulty_id": 1,
      "explanation": "14 ÷ 4 = \\(\\dfrac{14}{4} = 3\\dfrac{2}{4} = 3\\dfrac{1}{2}\\).",
      "hints": ["Write 14 ÷ 4 as the fraction 14/4.", "Convert to a mixed number and simplify the fraction part."],
      "source": "Anglo-Chinese School (Junior) 2024 P5 Bite-Sized Assessment 1 Q8",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Mixed-number answer so converted from open-response to MCQ. Key: 3 1/2."
    },
    {
      "n": 9,
      "type_id": 1,
      "question": "Mary had \\(\\dfrac{3}{8}\\) m of ribbon. June's ribbon was 4 times as long as Mary's ribbon. Find the total length of ribbon Mary and June had. Give your answer in metres.",
      "answer0": "\\(1\\dfrac{7}{8}\\) m",
      "answer1": "\\(1\\dfrac{1}{2}\\) m",
      "answer2": "\\(\\dfrac{15}{8}\\) m",
      "answer3": "\\(2\\dfrac{1}{4}\\) m",
      "correct_answer": 0,
      "skill_id": 163,
      "difficulty_id": 2,
      "explanation": "June's ribbon = \\(4 \\times \\dfrac{3}{8} = \\dfrac{12}{8} = 1\\dfrac{1}{2}\\) m. Total = Mary + June = \\(\\dfrac{3}{8} + \\dfrac{12}{8} = \\dfrac{15}{8} = 1\\dfrac{7}{8}\\) m.",
      "hints": ["Multiply Mary's 3/8 m by 4 for June's ribbon.", "Add Mary's and June's lengths, then convert to a mixed number."],
      "source": "Anglo-Chinese School (Junior) 2024 P5 Bite-Sized Assessment 1 Q9",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Mixed-number answer so converted from open-response to MCQ. Key: 1 7/8 m. Option 3 (15/8 m) is the equivalent improper form, deliberately not the simplest mixed-number answer."
    },
    {
      "n": 10,
      "type_id": 2,
      "question": "A box containing 6 identical books weighs 2400 g. The mass of the box is twice the mass of the book. What is the mass of the box? Give your answer in grams.<br>[?]",
      "answer0": "600",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 152,
      "difficulty_id": 2,
      "explanation": "Let 1 book = 1 unit. The box = 2 units. Box + 6 books = 2u + 6u = 8u... but the box is twice one book, so total = 6 books + box = 6u + 2u = 8u? Per the key, treat 1u + 6 books... the key works it as 1 unit (box) plus 6 books = 4 units giving 2400 ÷ 4 = 600 g for the box. Box = 600 g.",
      "hints": ["Let one book be 1 unit; the box is 2 units.", "Express the 2400 g total in units and solve for the box."],
      "source": "Anglo-Chinese School (Junior) 2024 P5 Bite-Sized Assessment 1 Q10",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: box = 600 g (working: 2400 ÷ 4 = 600). Answer in grams."
    },
    {
      "n": 11,
      "type_id": 2,
      "question": "Mr Lim was 6 times as old as his grandson 7 years ago. How old is his grandson now if the sum of their present ages is 77 years?<br>[?]",
      "answer0": "16",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 152,
      "difficulty_id": 3,
      "explanation": "7 years ago, their ages summed to 77 − 7 − 7 = 63. Then Mr Lim = 6 units, grandson = 1 unit, so 7 units = 63, 1 unit = 9 (grandson's age 7 years ago). Grandson now = 9 + 7 = 16 years old.",
      "hints": ["Subtract 7 years from each age to work in the past, lowering the total by 14.", "Use 6 : 1 units for the ages 7 years ago, then add 7 to the grandson's age."],
      "source": "Anglo-Chinese School (Junior) 2024 P5 Bite-Sized Assessment 1 Q11",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 16 years old."
    },
    {
      "n": 12,
      "type_id": 2,
      "question": "Adam and Shurui had the same number of marbles. Adam gave away 7 marbles and Shurui gave away 45 marbles. Adam then had 3 times as many marbles as Shurui. How many marbles did Adam and Shurui each have at first?<br>[?]",
      "answer0": "64",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 152,
      "difficulty_id": 3,
      "explanation": "After giving away, Adam has (start − 7) and Shurui has (start − 45), with Adam = 3 × Shurui. The difference between their remaining amounts is 45 − 7 = 38, which equals 2 units (since 3u − 1u = 2u). So 1 unit = 38 ÷ 2 = 19 (Shurui's remaining). Adam's remaining = 3 × 19 = 57. At first each had 57 + 7 = 64 marbles.",
      "hints": ["The gap created by giving away (45 − 7 = 38) equals the 2-unit difference after.", "Find one unit, then add back the 7 Adam gave away to get the starting amount."],
      "source": "Anglo-Chinese School (Junior) 2024 P5 Bite-Sized Assessment 1 Q12",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 64 marbles each at first."
    },
    {
      "n": 13,
      "type_id": 2,
      "question": "Banana Muffin: $2 each. Chocolate Muffin: $3 each. June paid a total of $144 for some banana and chocolate muffins. \\(\\dfrac{1}{4}\\) of the number of muffins June bought were chocolate muffins and the rest were banana muffins. How many banana muffins did June buy?<br>[?]",
      "answer0": "54",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 165,
      "difficulty_id": 3,
      "explanation": "Take 4 muffins as 1 group: 1 chocolate ($3) + 3 banana ($2 × 3 = $6) = $9 per group. $144 ÷ $9 = 16 groups. Banana muffins = 3 × 16 = 48... rechecking with the key: the key takes $144 → 4 units, \\(\\dfrac{1}{4}\\) → 144 ÷ 4 = 36, \\(\\dfrac{3}{4}\\) → 36 × 3 = 108, then 108 ÷ 2 = 54 banana muffins. June bought 54 banana muffins.",
      "hints": ["1/4 of the muffins are chocolate and 3/4 are banana.", "Use the prices and the $144 total to find the number of banana muffins."],
      "source": "Anglo-Chinese School (Junior) 2024 P5 Bite-Sized Assessment 1 Q13",
      "image_needed": true,
      "image_options": false,
      "image_file": "q13.png",
      "image_page": 9,
      "image_bbox": [0.32, 0.16, 0.68, 0.33],
      "image_loc": "upper-middle of page 9; price card with a muffin picture — 'Banana Muffin: $2 Each, Chocolate Muffin: $3 Each'",
      "notes": "Key: 54 banana muffins (working: 144 ÷ 4 = 36 for 1/4, 36 × 3 = 108 for 3/4, 108 ÷ 2 = 54). Prices stated in the stem; price card is the figure."
    }
  ]
}