{
  "paper": {
    "school": "Red Swastika",
    "year": 2024,
    "level": "P3",
    "label": "Class Test 1",
    "source_prefix": "Red Swastika 2024 P3 Class Test 1",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "4 thousands, 6 hundreds and 9 ones is the same as [?].",
      "answer0": "4069",
      "answer1": "4609",
      "answer2": "4690",
      "answer3": "4960",
      "correct_answer": 1,
      "skill_id": 66,
      "difficulty_id": 1,
      "explanation": "4 thousands = 4000, 6 hundreds = 600, 9 ones = 9. 4000 + 600 + 9 = 4609.",
      "hints": ["Write each part in standard form and add.", "There are no tens, so the tens digit is 0."],
      "source": "Red Swastika 2024 P3 Class Test 1 Q1",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q1 = option (2) = 4609."
    },
    {
      "n": 2,
      "type_id": 1,
      "question": "In 4012, the digit 1 is in the [?] place.",
      "answer0": "ones",
      "answer1": "tens",
      "answer2": "hundreds",
      "answer3": "thousands",
      "correct_answer": 1,
      "skill_id": 66,
      "difficulty_id": 1,
      "explanation": "In 4012, reading from the right: 2 ones, 1 ten, 0 hundreds, 4 thousands. So the digit 1 is in the tens place.",
      "hints": ["Read the places from the right: ones, tens, hundreds, thousands.", "The digit 1 is second from the right."],
      "source": "Red Swastika 2024 P3 Class Test 1 Q2",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q2 = option (2) = tens."
    },
    {
      "n": 3,
      "type_id": 1,
      "question": "The difference between 3600 and 1228 is [?].",
      "answer0": "2372",
      "answer1": "2382",
      "answer2": "2482",
      "answer3": "4828",
      "correct_answer": 0,
      "skill_id": 70,
      "difficulty_id": 1,
      "explanation": "3600 - 1228 = 2372.",
      "hints": ["Difference means subtract the smaller from the larger.", "Line up the digits and subtract with regrouping."],
      "source": "Red Swastika 2024 P3 Class Test 1 Q3",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q3 = option (1) = 2372."
    },
    {
      "n": 4,
      "type_id": 1,
      "question": "Find the product of 7 and 238.",
      "answer0": "1416",
      "answer1": "1466",
      "answer2": "1616",
      "answer3": "1666",
      "correct_answer": 3,
      "skill_id": 75,
      "difficulty_id": 1,
      "explanation": "7 x 238 = 1666.",
      "hints": ["Product means multiply.", "Multiply 238 by 7."],
      "source": "Red Swastika 2024 P3 Class Test 1 Q4",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q4 = option (4) = 1666."
    },
    {
      "n": 5,
      "type_id": 1,
      "question": "What is the missing number in the following number pattern?\n2365 , 2375 , 2395 , [?] , 2465 , 2515",
      "answer0": "2405",
      "answer1": "2415",
      "answer2": "2425",
      "answer3": "2435",
      "correct_answer": 2,
      "skill_id": 69,
      "difficulty_id": 2,
      "explanation": "The differences increase by 10 each time: +10 (2365->2375), +20 (2375->2395), +30 (2395->2425), +40 (2425->2465), +50 (2465->2515). The missing number is 2425.",
      "hints": ["Look at how much is added each step.", "The gaps grow: 10, 20, 30, 40, 50."],
      "source": "Red Swastika 2024 P3 Class Test 1 Q5",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q5 = option (3) = 2425."
    },
    {
      "n": 6,
      "type_id": 1,
      "question": "The sum of two numbers is 400. The smaller number is 120. What is the difference between the two numbers?",
      "answer0": "160",
      "answer1": "280",
      "answer2": "520",
      "answer3": "800",
      "correct_answer": 0,
      "skill_id": 71,
      "difficulty_id": 2,
      "explanation": "The larger number = 400 - 120 = 280. Difference = 280 - 120 = 160.",
      "hints": ["First find the larger number by subtracting 120 from 400.", "Then subtract the smaller number from the larger."],
      "source": "Red Swastika 2024 P3 Class Test 1 Q6",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q6 = option (1) = 160."
    },
    {
      "n": 7,
      "type_id": 1,
      "question": "I am a number between 20 and 40. You can find me in the multiplication tables of 6 and 8. What number am I?",
      "answer0": "24",
      "answer1": "28",
      "answer2": "30",
      "answer3": "32",
      "correct_answer": 0,
      "skill_id": 73,
      "difficulty_id": 2,
      "explanation": "A common multiple of 6 and 8 between 20 and 40 is 24 (6 x 4 = 24 and 8 x 3 = 24).",
      "hints": ["List multiples of 6 and multiples of 8.", "Find the value that appears in both lists between 20 and 40."],
      "source": "Red Swastika 2024 P3 Class Test 1 Q7",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q7 = option (1) = 24."
    },
    {
      "n": 8,
      "type_id": 1,
      "question": "A x A = 81\n45 / A = B\nWhat is the missing number represented by B?",
      "answer0": "5",
      "answer1": "6",
      "answer2": "8",
      "answer3": "9",
      "correct_answer": 0,
      "skill_id": 73,
      "difficulty_id": 2,
      "explanation": "A x A = 81, so A = 9. Then B = 45 / 9 = 5.",
      "hints": ["Find A first: which number times itself gives 81?", "Then divide 45 by A to get B."],
      "source": "Red Swastika 2024 P3 Class Test 1 Q8",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q8 = option (1) = 5. Original uses boxed letters A and B; rendered as plain text."
    },
    {
      "n": 9,
      "type_id": 1,
      "question": "John saved $124 each month. Tom saved 3 times as much as John each month. How much would Tom save in 6 months?",
      "answer0": "$264",
      "answer1": "$372",
      "answer2": "$2232",
      "answer3": "$2976",
      "correct_answer": 2,
      "skill_id": 76,
      "difficulty_id": 2,
      "explanation": "Tom saves 3 x $124 = $372 each month. In 6 months: $372 x 6 = $2232.",
      "hints": ["First find how much Tom saves in one month.", "Then multiply by 6 months."],
      "source": "Red Swastika 2024 P3 Class Test 1 Q9",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q9 = option (3) = $2232."
    },
    {
      "n": 10,
      "type_id": 1,
      "question": "The length of Ribbon A is 5 times as long as Ribbon B. Ribbon B is 36 cm shorter than Ribbon A. Find the length of Ribbon A.",
      "answer0": "41 cm",
      "answer1": "45 cm",
      "answer2": "54 cm",
      "answer3": "180 cm",
      "correct_answer": 1,
      "skill_id": 76,
      "difficulty_id": 3,
      "explanation": "A = 5 units, B = 1 unit. A - B = 4 units = 36 cm, so 1 unit = 9 cm. Ribbon A = 5 x 9 = 45 cm.",
      "hints": ["Let Ribbon B be 1 unit; then Ribbon A is 5 units.", "The difference of 4 units equals 36 cm."],
      "source": "Red Swastika 2024 P3 Class Test 1 Q10",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q10 = option (2) = 45 cm."
    },
    {
      "n": 11,
      "type_id": 1,
      "question": "Write 9544 in words.",
      "answer0": "nine thousand five hundred and forty-four",
      "answer1": "nine thousand and five hundred forty-four",
      "answer2": "ninety thousand five hundred and forty-four",
      "answer3": "nine thousand five hundred and fourteen",
      "correct_answer": 0,
      "skill_id": 67,
      "difficulty_id": 1,
      "explanation": "9544 = 9000 + 500 + 44 = nine thousand five hundred and forty-four.",
      "hints": ["Break it into thousands, hundreds, tens and ones.", "44 is forty-four."],
      "source": "Red Swastika 2024 P3 Class Test 1 Q11",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Word answer converted to MCQ (key: nine thousand five hundred and forty-four = option (1))."
    },
    {
      "n": 12,
      "type_id": 2,
      "question": "What is the remainder when 543 is divided by 6?",
      "answer0": "3",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 74,
      "difficulty_id": 2,
      "explanation": "543 / 6 = 90 remainder 3, since 90 x 6 = 540 and 543 - 540 = 3.",
      "hints": ["Divide 543 by 6 and look at what is left over.", "6 x 90 = 540."],
      "source": "Red Swastika 2024 P3 Class Test 1 Q12",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "KEY DISCREPANCY: official key shows '90' (the quotient) but the question asks for the REMAINDER, which is 3. Recorded the correct remainder 3; key value appears to be a transcription error."
    },
    {
      "n": 13,
      "type_id": 2,
      "question": "3 2 [?] 4\n-  1 5 9 7\n   1 [?] 2 7\nWhat are the missing digits represented by K and J?",
      "answer0": "2",
      "answer1": "6",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 70,
      "difficulty_id": 3,
      "explanation": "32K4 - 1597 = 1J27. Tens column gives K = 2 (so 3224 - 1597 = 1627), making J = 6. First blank K = 2, second blank J = 6.",
      "hints": ["Work column by column from the right, watching for borrowing.", "Ones: 4 - 7 needs a borrow."],
      "source": "Red Swastika 2024 P3 Class Test 1 Q13",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Vertical subtraction with boxed unknowns K and J; rendered as text. answer0 = K = 2, answer1 = J = 6 (matches key)."
    },
    {
      "n": 14,
      "type_id": 2,
      "question": "Use all the digits 4, 8 and 6 to form the greatest 3-digit number. Find the quotient when the 3-digit number is divided by 2.",
      "answer0": "432",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 75,
      "difficulty_id": 2,
      "explanation": "Greatest 3-digit number from 4, 8, 6 is 864. 864 / 2 = 432.",
      "hints": ["Arrange the digits from largest to smallest to make the greatest number.", "Then divide that number by 2."],
      "source": "Red Swastika 2024 P3 Class Test 1 Q14",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q14 = 432."
    },
    {
      "n": 15,
      "type_id": 2,
      "question": "Two numbers, A and B, add up to 600. Given that both of them are 3-digit numbers greater than 100, find the greatest possible difference between A and B.",
      "answer0": "398",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 71,
      "difficulty_id": 3,
      "explanation": "To maximise the difference, make one number as large as possible and the other the smallest 3-digit number greater than 100, which is 101. The other is 600 - 101 = 499. Difference = 499 - 101 = 398.",
      "hints": ["The smallest 3-digit number greater than 100 is 101.", "The other number is 600 minus that, then find the difference."],
      "source": "Red Swastika 2024 P3 Class Test 1 Q15",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q15 working: 600 - 101 = 499; 499 - 101 = 398. Answer = 398."
    }
  ]
}