{
  "paper": {
    "school": "Henry Park",
    "year": 2024,
    "level": "P2",
    "label": "Quiz 3",
    "source_prefix": "Henry Park 2024 P2 Quiz 3",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "7 × 4 = [?]",
      "answer0": "11",
      "answer1": "24",
      "answer2": "3",
      "answer3": "28",
      "correct_answer": 3,
      "skill_id": 39,
      "difficulty_id": 1,
      "explanation": "7 × 4 = 28.",
      "hints": ["Multiply 7 by 4.", "7 groups of 4: 4, 8, 12, 16, 20, 24, 28."],
      "source": "Henry Park 2024 P2 Quiz 3 Q1",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 4 (28)."
    },
    {
      "n": 2,
      "type_id": 1,
      "question": "27 ÷ 3 = [?]",
      "answer0": "8",
      "answer1": "9",
      "answer2": "24",
      "answer3": "30",
      "correct_answer": 1,
      "skill_id": 39,
      "difficulty_id": 1,
      "explanation": "27 ÷ 3 = 9.",
      "hints": ["How many 3s make 27?", "3 × 9 = 27, so 27 ÷ 3 = 9."],
      "source": "Henry Park 2024 P2 Quiz 3 Q2",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 2 (9)."
    },
    {
      "n": 3,
      "type_id": 1,
      "question": "5 x 4 is _________ more than 2 x 4.",
      "answer0": "8",
      "answer1": "12",
      "answer2": "3",
      "answer3": "20",
      "correct_answer": 1,
      "skill_id": 39,
      "difficulty_id": 2,
      "explanation": "5 × 4 = 20 and 2 × 4 = 8. 20 − 8 = 12.",
      "hints": ["Work out 5 × 4 and 2 × 4 first.", "Find the difference: 20 − 8."],
      "source": "Henry Park 2024 P2 Quiz 3 Q3",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 2 (12)."
    },
    {
      "n": 4,
      "type_id": 1,
      "question": "Sam receives a sticker for every 4 questions that he answers correctly. He received 8 stickers, how many questions did he answer correctly?",
      "answer0": "12",
      "answer1": "2",
      "answer2": "32",
      "answer3": "34",
      "correct_answer": 2,
      "skill_id": 40,
      "difficulty_id": 2,
      "explanation": "8 stickers × 4 questions each = 32 questions.",
      "hints": ["Each sticker means 4 correct questions.", "Multiply 8 × 4."],
      "source": "Henry Park 2024 P2 Quiz 3 Q4",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 3 (32)."
    },
    {
      "n": 5,
      "type_id": 1,
      "question": "Which of the following does not describe the picture?",
      "answer0": "7 + 7 + 7",
      "answer1": "7 × 3",
      "answer2": "3 groups of 7",
      "answer3": "3 + 3 + 3 + 3 + 3",
      "correct_answer": 3,
      "skill_id": 36,
      "difficulty_id": 2,
      "explanation": "The picture shows 3 rows of 7 stars = 21 stars (7+7+7, 7×3, 3 groups of 7). '3 + 3 + 3 + 3 + 3' = 15, which does not describe it.",
      "hints": ["Count the stars in each row and the number of rows.", "Which option does not equal 3 rows of 7?"],
      "source": "Henry Park 2024 P2 Quiz 3 Q5",
      "image_needed": true,
      "image_options": false,
      "image_file": "q5.png",
      "notes": "Figure on page 2: 3 rows of 7 stars (21 total). Key: option 4. image_page 2, image_loc: middle of page, between the question and the options."
    },
    {
      "n": 6,
      "type_id": 2,
      "question": "Fill in the boxes to complete the multiplication equation based on the picture. [?] × [?] = [?]",
      "answer0": "3",
      "answer1": "4",
      "answer2": "12",
      "answer3": null,
      "correct_answer": null,
      "skill_id": 36,
      "difficulty_id": 1,
      "explanation": "There are 3 groups of 4 cake slices: 3 × 4 = 12.",
      "hints": ["Count the number of ovals (groups).", "Count the slices in each oval, then multiply."],
      "source": "Henry Park 2024 P2 Quiz 3 Q6",
      "image_needed": true,
      "image_options": false,
      "image_file": "q6.png",
      "notes": "Figure on page 3: 3 ovals each containing 4 cake slices. Key: 3 × 4 = 12. image_page 3, image_loc: upper-middle of page, below the question above the answer boxes."
    },
    {
      "n": 7,
      "type_id": 2,
      "question": "Cupboard A has a mass of 254 kg. It is 118 kg lighter than Cupboard B. What is the mass of Cupboard B?",
      "answer0": "372",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 54,
      "difficulty_id": 2,
      "explanation": "A is 118 kg lighter than B, so B = 254 + 118 = 372 kg.",
      "hints": ["Cupboard B is heavier than Cupboard A.", "Add: 254 + 118."],
      "source": "Henry Park 2024 P2 Quiz 3 Q7",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer in kg. Key: 254 + 118 = 372."
    },
    {
      "n": 8,
      "type_id": 1,
      "question": "Emma wanted to buy a storybook that costs $18. She saved $3 a day starting from Monday. On which day will she be able to buy the book?",
      "answer0": "Thursday",
      "answer1": "Friday",
      "answer2": "Saturday",
      "answer3": "Sunday",
      "correct_answer": 2,
      "skill_id": 40,
      "difficulty_id": 2,
      "explanation": "She needs $18 at $3/day = 6 days. Day 1 Mon, day 6 Saturday. So Saturday.",
      "hints": ["18 ÷ 3 = number of days needed.", "Count 6 days starting from Monday."],
      "source": "Henry Park 2024 P2 Quiz 3 Q8",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer is a day name (word) so rendered as MCQ. Key: Saturday. Original is open-ended with a days-of-the-week list; figure not required for solving."
    },
    {
      "n": "9a",
      "type_id": 1,
      "question": "Molly bought 20 marbles. She kept 12 marbles for herself and packed the rest equally into 4 bags. True or false: Molly packed 8 marbles.",
      "answer0": "True",
      "answer1": "False",
      "answer2": null,
      "answer3": null,
      "correct_answer": 0,
      "skill_id": 35,
      "difficulty_id": 2,
      "explanation": "Rest = 20 − 12 = 8 marbles packed. The statement says she packed 8 marbles, which is True.",
      "hints": ["Marbles packed = 20 − 12.", "Compare with the statement."],
      "source": "Henry Park 2024 P2 Quiz 3 Q9",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Statement (a) of Q9 true/false table. Key: True. Rendered as 2-option MCQ (tick-the-box is interactive but answer is a definite truth value)."
    },
    {
      "n": "9b",
      "type_id": 1,
      "question": "Molly bought 20 marbles. She kept 12 marbles for herself and packed the rest equally into 4 bags. True or false: There was an odd number of marbles in each bag.",
      "answer0": "True",
      "answer1": "False",
      "answer2": null,
      "answer3": null,
      "correct_answer": 1,
      "skill_id": 33,
      "difficulty_id": 2,
      "explanation": "8 marbles packed equally into 4 bags = 2 in each bag. 2 is even, so the statement is False.",
      "hints": ["Marbles per bag = 8 ÷ 4.", "Is that number odd or even?"],
      "source": "Henry Park 2024 P2 Quiz 3 Q9",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Statement (b) of Q9 true/false table. Key: False (2 per bag is even). Rendered as 2-option MCQ."
    },
    {
      "n": "10a",
      "type_id": 2,
      "question": "There are 320 students in Primary Two. 146 of them are boys and the rest are girls. How many girls are there in Primary Two?",
      "answer0": "174",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 35,
      "difficulty_id": 2,
      "explanation": "Girls = 320 − 146 = 174.",
      "hints": ["Total minus boys gives girls.", "Subtract: 320 − 146."],
      "source": "Henry Park 2024 P2 Quiz 3 Q10",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Part (a) of Q10. Key: 320 − 146 = 174."
    },
    {
      "n": "10b",
      "type_id": 2,
      "question": "There are 320 students in Primary Two. 146 of them are boys and the rest are girls. How many more girls than boys are there in Primary Two?",
      "answer0": "28",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 35,
      "difficulty_id": 2,
      "explanation": "Girls = 174, boys = 146. 174 − 146 = 28 more girls.",
      "hints": ["First find the number of girls (174).", "Subtract boys from girls: 174 − 146."],
      "source": "Henry Park 2024 P2 Quiz 3 Q10",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Part (b) of Q10. Key: 174 − 146 = 28."
    },
    {
      "n": 11,
      "type_id": 2,
      "question": "Mrs Wong sold 430 cupcakes at a food fair. She sold 145 more cupcakes than Mdm Lee. How many cupcakes did they sell in all?",
      "answer0": "715",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 35,
      "difficulty_id": 2,
      "explanation": "Mdm Lee = 430 − 145 = 285. Total = 430 + 285 = 715.",
      "hints": ["Find how many Mdm Lee sold: 430 − 145.", "Add both amounts together."],
      "source": "Henry Park 2024 P2 Quiz 3 Q11",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 430 − 145 = 285; 430 + 285 = 715. (Key page has a typo '115' in handwriting; printed table shows 715.)"
    },
    {
      "n": 12,
      "type_id": 2,
      "question": "Danny had some candies. His mother bought him another 150 candies. He gave 60 candies to his friend. He had 310 candies left. How many candies did he have at first?",
      "answer0": "220",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 35,
      "difficulty_id": 3,
      "explanation": "Work backwards: 310 + 60 = 370; 370 − 150 = 220.",
      "hints": ["Work backwards from 310 left.", "Add back the 60 given, then subtract the 150 bought."],
      "source": "Henry Park 2024 P2 Quiz 3 Q12",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 310 + 60 = 370; 370 − 150 = 220."
    },
    {
      "n": 13,
      "type_id": 2,
      "question": "Ravi bought some stickers and 4 cards. He had 8 stickers left after pasting 9 stickers on each of the 4 cards. How many stickers did he buy at first?",
      "answer0": "44",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 40,
      "difficulty_id": 3,
      "explanation": "Pasted = 9 × 4 = 36 stickers. Bought at first = 36 + 8 = 44.",
      "hints": ["Find how many stickers were pasted: 9 × 4.", "Add the 8 stickers left over."],
      "source": "Henry Park 2024 P2 Quiz 3 Q13",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 9 × 4 = 36; 36 + 8 = 44."
    },
    {
      "n": 14,
      "type_id": 2,
      "question": "Jill had 8 boxes of toys. There were 3 toys in each box. Jill gave all the toys to 6 of her friends. Each friend received the same number of toys. How many toys did each of her friend receive?",
      "answer0": "4",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 40,
      "difficulty_id": 3,
      "explanation": "Total toys = 8 × 3 = 24. Shared among 6 friends: 24 ÷ 6 = 4 each.",
      "hints": ["Find the total number of toys: 8 × 3.", "Divide the total by 6 friends."],
      "source": "Henry Park 2024 P2 Quiz 3 Q14",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 8 × 3 = 24; 24 ÷ 6 = 4."
    }
  ]
}