{
  "paper": {
    "school": "CHIJ St Nicholas Girls'",
    "year": 2023,
    "level": "P2",
    "label": "Term 2 Revision",
    "source_prefix": "CHIJ 2023 P2 Term 2 Revision",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "How many fives are there in 2 groups of 10?",
      "answer0": "25",
      "answer1": "20",
      "answer2": "5",
      "answer3": "4",
      "correct_answer": 3,
      "skill_id": 39,
      "difficulty_id": 2,
      "explanation": "2 groups of 10 = 20. 20 ÷ 5 = 4. There are 4 fives.",
      "hints": ["First find how many altogether: 2 × 10 = 20.", "Then divide by 5: 20 ÷ 5 = ?"],
      "source": "CHIJ 2023 P2 Term 2 Revision Q1",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option (4) = 4."
    },
    {
      "n": 2,
      "type_id": 1,
      "question": "6 × 4 is the same as [?] × 3.",
      "answer0": "7",
      "answer1": "8",
      "answer2": "24",
      "answer3": "27",
      "correct_answer": 1,
      "skill_id": 39,
      "difficulty_id": 2,
      "explanation": "6 × 4 = 24. 24 = 8 × 3, so the missing number is 8.",
      "hints": ["Work out 6 × 4 first.", "What times 3 gives that product?"],
      "source": "CHIJ 2023 P2 Term 2 Revision Q2",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "MCQ as printed (blank inside stem). Key: option (2) = 8."
    },
    {
      "n": 3,
      "type_id": 1,
      "question": "Which of the following is the same as 3 + 3 + 3 + 3 + 3 + 3 + 3?",
      "answer0": "3 × 3",
      "answer1": "7 + 3",
      "answer2": "7 groups of 3",
      "answer3": "24",
      "correct_answer": 2,
      "skill_id": 36,
      "difficulty_id": 1,
      "explanation": "Adding 3 seven times means 7 groups of 3, i.e. 7 × 3 = 21.",
      "hints": ["Count how many 3s are added.", "Repeated addition is the same as groups."],
      "source": "CHIJ 2023 P2 Term 2 Revision Q3",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option (3) = 7 groups of 3."
    },
    {
      "n": 4,
      "type_id": 1,
      "question": "What is the missing sign in the box?\n7 × 5 = 5 × 5 [?] 2 × 5",
      "answer0": "+",
      "answer1": "−",
      "answer2": "×",
      "answer3": "÷",
      "correct_answer": 0,
      "skill_id": 39,
      "difficulty_id": 2,
      "explanation": "7 × 5 = 35. 5 × 5 = 25 and 2 × 5 = 10. 25 + 10 = 35, so the sign is +.",
      "hints": ["Work out each side: 7 × 5, 5 × 5, 2 × 5.", "Which operation makes 25 and 10 equal 35?"],
      "source": "CHIJ 2023 P2 Term 2 Revision Q4",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option (1) = +. Box represented inline with [?]; not an image."
    },
    {
      "n": 5,
      "type_id": 1,
      "question": "Look at the model. Find the answer.",
      "answer0": "7",
      "answer1": "8",
      "answer2": "63",
      "answer3": "77",
      "correct_answer": 0,
      "skill_id": 39,
      "difficulty_id": 2,
      "explanation": "The bar of 70 is split into 10 equal units. 70 ÷ 10 = 7, so one unit (?) = 7.",
      "hints": ["Count the equal parts in the bar.", "Divide the whole (70) by the number of parts."],
      "source": "CHIJ 2023 P2 Term 2 Revision Q5",
      "image_needed": true,
      "image_page": 3,
      "image_loc": "top of page, bar model split into 10 equal boxes labelled '?' with total 70 underneath",
      "image_options": false,
      "image_file": null,
      "notes": "Bar model of 70 in 10 units; one unit = 7. Key: option (1) = 7."
    },
    {
      "n": 6,
      "type_id": 1,
      "question": "Mr Mok wants to divide 18 pupils equally into smaller groups. Which of the following groupings is not possible?",
      "answer0": "2 groups of 9",
      "answer1": "3 groups of 6",
      "answer2": "6 groups of 3",
      "answer3": "8 groups of 2",
      "correct_answer": 3,
      "skill_id": 40,
      "difficulty_id": 2,
      "explanation": "2×9=18, 3×6=18, 6×3=18 all work. 8×2=16 ≠ 18, so 8 groups of 2 is not possible.",
      "hints": ["Multiply each grouping to check if it makes 18.", "Find the one that does not equal 18."],
      "source": "CHIJ 2023 P2 Term 2 Revision Q6",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option (4) = 8 groups of 2."
    },
    {
      "n": 7,
      "type_id": 2,
      "question": "Multiply 4 by 8.\nThe answer is [?].",
      "answer0": "32",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 39,
      "difficulty_id": 1,
      "explanation": "4 × 8 = 32.",
      "hints": ["This is a multiplication fact.", "Use the times table of 4 or 8."],
      "source": "CHIJ 2023 P2 Term 2 Revision Q7",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 32."
    },
    {
      "n": 8,
      "type_id": 2,
      "question": "Write one multiplication equation based on the picture.\n[?] × [?] = [?]",
      "answer0": "5",
      "answer1": "3",
      "answer2": "15",
      "answer3": null,
      "correct_answer": null,
      "skill_id": 36,
      "difficulty_id": 2,
      "explanation": "There are 5 cups, each holding 3 scoops: 5 × 3 = 15.",
      "hints": ["Count the groups and how many in each.", "Multiply groups by items per group."],
      "source": "CHIJ 2023 P2 Term 2 Revision Q8",
      "image_needed": true,
      "image_page": 4,
      "image_loc": "middle of page, row of 5 dessert/milkshake cups below the question",
      "image_options": false,
      "image_file": null,
      "notes": "Write-equation task -> FIB as multiplication fact [?] x [?] = [?]. Key: 5 x 3 = 15."
    },
    {
      "n": 9,
      "type_id": 1,
      "question": "Fill in the blank with 'cm' or 'm'.\nThe height of a box of tissue is about 8 [?].",
      "answer0": "cm",
      "answer1": "m",
      "answer2": "g",
      "answer3": "kg",
      "correct_answer": 0,
      "skill_id": 52,
      "difficulty_id": 1,
      "explanation": "A tissue box is small, about 8 cm tall; 8 m would be far too tall.",
      "hints": ["Think about how tall a tissue box really is.", "metres are for large lengths, cm for small."],
      "source": "CHIJ 2023 P2 Term 2 Revision Q9",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Word/unit answer -> MCQ (4 unit options). Key: cm."
    },
    {
      "n": 10,
      "type_id": 2,
      "question": "How many more triangles are needed to show 7 twos?",
      "answer0": "4",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 36,
      "difficulty_id": 2,
      "explanation": "7 twos = 7 × 2 = 14 triangles. There are 9 shown, so 14 − 9 = 5... 7 twos needs 14; 9 drawn means 5 more. Key states 4 more (9 + 4 = 13).",
      "hints": ["7 twos means 7 × 2.", "Count the triangles shown, then find the difference."],
      "source": "CHIJ 2023 P2 Term 2 Revision Q10",
      "image_needed": true,
      "image_page": 5,
      "image_loc": "top-left, two rows of triangles (5 then 4 = 9 triangles) beside an empty answer box",
      "image_options": false,
      "image_file": null,
      "notes": "Draw-answer task converted to numeric FIB (count more needed). Answer key shows 4 triangles drawn (key Q10 = 4 triangles). Stored as count 4 per key."
    },
    {
      "n": 11,
      "type_id": 2,
      "question": "Mrs Pang bought 40 cookies from a bakery. The cookies are packed in boxes of 5. Complete the model.\nWhole = [?], one part = [?]",
      "answer0": "40",
      "answer1": "5",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 40,
      "difficulty_id": 2,
      "explanation": "Total cookies = 40 (the whole), packed in boxes of 5 (each part = 5).",
      "hints": ["The total goes above the whole bar.", "Each box of 5 is one part."],
      "source": "CHIJ 2023 P2 Term 2 Revision Q11",
      "image_needed": true,
      "image_page": 5,
      "image_loc": "middle of page, bar model with a top brace '( )' over the whole and a bottom brace '( )' under one part",
      "image_options": false,
      "image_file": null,
      "notes": "Complete-the-model task -> FIB for the two brace values. Key: top (40), bottom (5)."
    },
    {
      "n": 12,
      "type_id": 0,
      "question": "Circle the cards which have the same value as 16.",
      "answer0": null,
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 39,
      "difficulty_id": 2,
      "explanation": "2×8=16 and 4 groups of 4 = 16. 4 sixes = 24 and 32÷4 = 8 are not 16.",
      "hints": ["Work out the value of each card.", "Pick the cards equal to 16."],
      "source": "CHIJ 2023 P2 Term 2 Revision Q12",
      "image_needed": true,
      "image_page": 6,
      "image_loc": "upper area, four cards: '2 x 8', '4 sixes', '32 ÷ 4', '4 groups of 4'",
      "image_options": false,
      "image_file": null,
      "notes": "Circle (interactive) task -> type_id 0, skipped on insert. Answer per key: circle '2 x 8' and '4 groups of 4'."
    },
    {
      "n": 13,
      "type_id": 2,
      "question": "Leo had 17 tennis balls and Ziyang had 11 tennis balls. They put all their tennis balls equally into 4 boxes. How many tennis balls were there in each box?",
      "answer0": "7",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 40,
      "difficulty_id": 2,
      "explanation": "17 + 11 = 28 balls. 28 ÷ 4 = 7 balls in each box.",
      "hints": ["First add the two amounts of tennis balls.", "Then divide the total by 4 boxes."],
      "source": "CHIJ 2023 P2 Term 2 Revision Q13",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 7 tennis balls."
    },
    {
      "n": 14,
      "type_id": 2,
      "question": "I am a 2-digit number. I am greater than 25 but smaller than 30. I can be found in the multiplication table of 3. What number am I?",
      "answer0": "27",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 36,
      "difficulty_id": 2,
      "explanation": "Multiples of 3 between 25 and 30: 27 (= 3 × 9). So the number is 27.",
      "hints": ["List multiples of 3 near that range.", "Which one is between 25 and 30?"],
      "source": "CHIJ 2023 P2 Term 2 Revision Q14",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 27."
    },
    {
      "n": 15,
      "type_id": 2,
      "question": "Celest saved 50 coins in a piggy bank. She took out some coins and grouped them into stacks of 10. How many coins were left in the coin bank?",
      "answer0": "10",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 40,
      "difficulty_id": 2,
      "explanation": "4 stacks of 10 = 40 coins taken out. 50 − 40 = 10 coins left.",
      "hints": ["Count the stacks and multiply by 10.", "Subtract the coins taken out from 50."],
      "source": "CHIJ 2023 P2 Term 2 Revision Q15",
      "image_needed": true,
      "image_page": 7,
      "image_loc": "upper area, a piggy bank beside 4 stacks of 10 coins",
      "image_options": false,
      "image_file": null,
      "notes": "Count to verify: 4 stacks of 10 shown. Key: 10 coins."
    },
    {
      "n": 16,
      "type_id": 2,
      "question": "Study the table.\n\nNames of Boys | Height (cm)\nEthan | 132\nHamid | 107\nJiaming | 119\nKrishnan | 125\n\nFind the difference in height between the tallest boy and the shortest boy.\n[?] cm",
      "answer0": "25",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 35,
      "difficulty_id": 2,
      "explanation": "Tallest = Ethan 132 cm, shortest = Hamid 107 cm. 132 − 107 = 25 cm.",
      "hints": ["Find the largest and smallest heights.", "Subtract the smallest from the largest."],
      "source": "CHIJ 2023 P2 Term 2 Revision Q16",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Table reproduced as text in stem. Key: 25 cm."
    },
    {
      "n": 17,
      "type_id": 2,
      "question": "Study the diagram of a pencil and a sharpener on a ruler.\n(a) The length of the pencil is about [?] cm.\n(b) The sharpener is [?] cm shorter than the pencil.",
      "answer0": "11",
      "answer1": "8",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 50,
      "difficulty_id": 2,
      "explanation": "Pencil spans 0 to 11 cm = 11 cm. Sharpener spans 2 to 5 cm = 3 cm. 11 − 3 = 8 cm shorter.",
      "hints": ["Read where each object starts and ends on the ruler.", "Subtract the sharpener's length from the pencil's length."],
      "source": "CHIJ 2023 P2 Term 2 Revision Q17",
      "image_needed": true,
      "image_page": 8,
      "image_loc": "middle of page, pencil and sharpener positioned over a 0-15 cm ruler",
      "image_options": false,
      "image_file": null,
      "notes": "Two-blank measurement question (parts a & b). Key: (a) 11 cm, (b) 8 cm."
    },
    {
      "n": 18,
      "type_id": 2,
      "question": "Leah has a ribbon that is 200 cm long. She uses 65 cm to tie a present and 32 cm to tie a box. What is the length of ribbon left?",
      "answer0": "103",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 35,
      "difficulty_id": 2,
      "explanation": "200 − 65 − 32 = 103 cm of ribbon left.",
      "hints": ["Add the two pieces used, or subtract them one at a time.", "Subtract the total used from 200 cm."],
      "source": "CHIJ 2023 P2 Term 2 Revision Q18",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 103 cm."
    },
    {
      "n": 19,
      "type_id": 2,
      "question": "Ariana shared 27 lollipops with her 2 sisters. How many lollipops did each child get?",
      "answer0": "9",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 40,
      "difficulty_id": 2,
      "explanation": "Ariana plus 2 sisters = 3 children. 27 ÷ 3 = 9 lollipops each.",
      "hints": ["Count the total number of children (Ariana and her 2 sisters).", "Divide 27 by the number of children."],
      "source": "CHIJ 2023 P2 Term 2 Revision Q19",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 27 ÷ 3 = 9 lollipops each."
    },
    {
      "n": 20,
      "type_id": 2,
      "question": "Mdm Nijah bought 3 bags of apples. There were 10 apples in each bag.\n(a) How many apples did she buy?\nMdm Nijah put all the apples equally on 5 plates.\n(b) How many apples were there on each plate?",
      "answer0": "30",
      "answer1": "6",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 40,
      "difficulty_id": 2,
      "explanation": "(a) 3 × 10 = 30 apples. (b) 30 ÷ 5 = 6 apples on each plate.",
      "hints": ["(a) Multiply bags by apples per bag.", "(b) Divide the total apples by 5 plates."],
      "source": "CHIJ 2023 P2 Term 2 Revision Q20",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Two-part word problem. Key: (a) 30 apples, (b) 6 apples per plate."
    }
  ]
}