{
  "paper": {
    "school": "Raffles Girls",
    "year": 2023,
    "level": "P2",
    "label": "Revision 1",
    "source_prefix": "Raffles Girls 2023 P2 Revision 1",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "231 + 57 = [?]",
      "answer0": "226",
      "answer1": "282",
      "answer2": "288",
      "answer3": "298",
      "correct_answer": 2,
      "skill_id": 34,
      "difficulty_id": 1,
      "explanation": "231 + 57 = 288.",
      "hints": ["Add the ones first: 1 + 7 = 8.", "Then add the tens: 30 + 50 = 80, so the answer is 288."],
      "source": "Raffles Girls 2023 P2 Revision 1 Q1",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: Q1 = option 3 (288)."
    },
    {
      "n": 2,
      "type_id": 1,
      "question": "467 + 28 = [?]",
      "answer0": "439",
      "answer1": "495",
      "answer2": "496",
      "answer3": "747",
      "correct_answer": 1,
      "skill_id": 34,
      "difficulty_id": 1,
      "explanation": "467 + 28 = 495.",
      "hints": ["Add the ones: 7 + 8 = 15, write 5 carry 1.", "Add the tens with the carry: 6 + 2 + 1 = 9, giving 495."],
      "source": "Raffles Girls 2023 P2 Revision 1 Q2",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: Q2 = option 2 (495)."
    },
    {
      "n": 3,
      "type_id": 1,
      "question": "Look at the picture. Choose the correct subtraction equation.",
      "answer0": "333 – 234 = 99",
      "answer1": "353 – 134 = 219",
      "answer2": "387 – 234 = 153",
      "answer3": "387 – 143 = 244",
      "correct_answer": 2,
      "skill_id": 34,
      "difficulty_id": 2,
      "explanation": "The place-value chart shows 387 with 234 crossed out, so the equation is 387 – 234 = 153.",
      "hints": ["Count the original blocks: 3 hundreds, 8 tens, 7 ones = 387.", "Count what is crossed out: 2 hundreds, 3 tens, 4 ones = 234, so 387 – 234 = 153."],
      "source": "Raffles Girls 2023 P2 Revision 1 Q3",
      "image_needed": true,
      "image_options": false,
      "image_file": "q3.png",
      "image_page": 2,
      "image_loc": "top of page, a Hundreds/Tens/Ones place-value chart with some blocks crossed out, below the question text",
      "notes": "Answer key: Q3 = option 3 (387 – 234 = 153)."
    },
    {
      "n": 4,
      "type_id": 2,
      "question": "(a) Write down the value of the second number. [?] (b) Based on the diagram, complete the addition equation using the first and second numbers. 157 + [?] = [?]",
      "answer0": "321",
      "answer1": "321",
      "answer2": "478",
      "answer3": null,
      "correct_answer": null,
      "skill_id": 34,
      "difficulty_id": 2,
      "explanation": "The second number is 3 hundreds, 2 tens and 1 one = 321. Then 157 + 321 = 478.",
      "hints": ["Read the place-value blocks for the second number: 3 hundreds, 2 tens, 1 one.", "Add the first and second numbers: 157 + 321 = 478."],
      "source": "Raffles Girls 2023 P2 Revision 1 Q4",
      "image_needed": true,
      "image_options": false,
      "image_file": "q4.png",
      "image_page": 3,
      "image_loc": "middle of page, a Hundreds/Tens/Ones place-value chart showing the first number (157) and the second number, between the (a) and (b) prompts",
      "notes": "Answer key: second = 321, 157 + 321 = 478. Blanks in order: second number value, missing addend, sum."
    },
    {
      "n": 5,
      "type_id": 2,
      "question": "♡ + ♡ = 80\n♡ + △ = 278\n△ = [?]",
      "answer0": "238",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 35,
      "difficulty_id": 3,
      "explanation": "Heart + Heart = 80, so Heart = 40. Heart + Triangle = 278, so Triangle = 278 – 40 = 238.",
      "hints": ["Since Heart + Heart = 80, one Heart = 40.", "Replace the Heart in the second line: 40 + Triangle = 278, so Triangle = 238."],
      "source": "Raffles Girls 2023 P2 Revision 1 Q5",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: 278 – 40 = 238, so Triangle = 238. Symbols are heart (♡) and triangle (△) rendered inline."
    }
  ]
}