{
  "title": "Subtraction of Decimals - Grade 4 ICSE",
  "total_questions": 60,
  "questions": [
    {
      "id": 1,
      "difficulty": "easy",
      "question": "🍎 If an apple weighs 0.5 kg and you eat 0.2 kg, how much is left?",
      "options": { "A": "0.2 kg", "B": "0.3 kg", "C": "0.4 kg", "D": "0.1 kg" },
      "correct_answer": "B"
    },
    {
      "id": 2,
      "difficulty": "easy",
      "question": "📏 1.5 m - 0.3 m = ?",
      "options": { "A": "1.1 m", "B": "1.2 m", "C": "1.3 m", "D": "1.4 m" },
      "correct_answer": "B"
    },
    {
      "id": 3,
      "difficulty": "easy",
      "question": "🍫 A chocolate bar is 0.8 kg. You give 0.3 kg to a friend. How much do you have?",
      "options": { "A": "0.4 kg", "B": "0.5 kg", "C": "0.6 kg", "D": "0.7 kg" },
      "correct_answer": "B"
    },
    {
      "id": 4,
      "difficulty": "easy",
      "question": "📐 2.4 cm - 1.2 cm = ?",
      "options": { "A": "1.1 cm", "B": "1.2 cm", "C": "1.3 cm", "D": "1.4 cm" },
      "correct_answer": "B"
    },
    {
      "id": 5,
      "difficulty": "easy",
      "question": "⚖️ 3.6 kg - 2.1 kg = ?",
      "options": { "A": "1.4 kg", "B": "1.5 kg", "C": "1.6 kg", "D": "1.7 kg" },
      "correct_answer": "B"
    },
    {
      "id": 6,
      "difficulty": "easy",
      "question": "🐱 A cat is 0.9 m long. Its tail is 0.3 m. How long is the body without tail?",
      "options": { "A": "0.5 m", "B": "0.6 m", "C": "0.7 m", "D": "0.8 m" },
      "correct_answer": "B"
    },
    {
      "id": 7,
      "difficulty": "easy",
      "question": "📏 4.7 m - 3.2 m = ?",
      "options": { "A": "1.4 m", "B": "1.5 m", "C": "1.6 m", "D": "1.7 m" },
      "correct_answer": "B"
    },
    {
      "id": 8,
      "difficulty": "easy",
      "question": "🍩 A donut weighs 0.6 kg. You eat 0.2 kg. How much remains?",
      "options": { "A": "0.3 kg", "B": "0.4 kg", "C": "0.5 kg", "D": "0.6 kg" },
      "correct_answer": "B"
    },
    {
      "id": 9,
      "difficulty": "easy",
      "question": "📐 5.8 cm - 4.3 cm = ?",
      "options": { "A": "1.4 cm", "B": "1.5 cm", "C": "1.6 cm", "D": "1.7 cm" },
      "correct_answer": "B"
    },
    {
      "id": 10,
      "difficulty": "easy",
      "question": "🍪 Cookie jar has 2.5 kg cookies. You take 1.0 kg. How much is left?",
      "options": { "A": "1.4 kg", "B": "1.5 kg", "C": "1.6 kg", "D": "1.7 kg" },
      "correct_answer": "B"
    },
    {
      "id": 11,
      "difficulty": "easy",
      "question": "⚖️ 6.9 kg - 5.4 kg = ?",
      "options": { "A": "1.4 kg", "B": "1.5 kg", "C": "1.6 kg", "D": "1.7 kg" },
      "correct_answer": "B"
    },
    {
      "id": 12,
      "difficulty": "easy",
      "question": "📏 7.2 m - 6.1 m = ?",
      "options": { "A": "1.0 m", "B": "1.1 m", "C": "1.2 m", "D": "1.3 m" },
      "correct_answer": "B"
    },
    {
      "id": 13,
      "difficulty": "easy",
      "question": "🖍️ A pencil was 0.25 m long. You sharpened 0.05 m. What's the new length?",
      "options": { "A": "0.19 m", "B": "0.20 m", "C": "0.21 m", "D": "0.22 m" },
      "correct_answer": "B"
    },
    {
      "id": 14,
      "difficulty": "easy",
      "question": "🍓 Basket had 3.5 kg strawberries. You used 1.5 kg. How much remains?",
      "options": { "A": "1.9 kg", "B": "2.0 kg", "C": "2.1 kg", "D": "2.2 kg" },
      "correct_answer": "B"
    },
    {
      "id": 15,
      "difficulty": "easy",
      "question": "📐 8.75 m - 7.25 m = ?",
      "options": { "A": "1.49 m", "B": "1.50 m", "C": "1.51 m", "D": "1.52 m" },
      "correct_answer": "B"
    },
    {
      "id": 16,
      "difficulty": "easy",
      "question": "🍌 Bunch of bananas was 2.8 kg. You ate 1.3 kg. How much is left?",
      "options": { "A": "1.4 kg", "B": "1.5 kg", "C": "1.6 kg", "D": "1.7 kg" },
      "correct_answer": "B"
    },
    {
      "id": 17,
      "difficulty": "easy",
      "question": "📏 9.6 cm - 8.1 cm = ?",
      "options": { "A": "1.4 cm", "B": "1.5 cm", "C": "1.6 cm", "D": "1.7 cm" },
      "correct_answer": "B"
    },
    {
      "id": 18,
      "difficulty": "easy",
      "question": "🐟 Fish was 0.45 m long. You cut off 0.15 m. What length remains?",
      "options": { "A": "0.29 m", "B": "0.30 m", "C": "0.31 m", "D": "0.32 m" },
      "correct_answer": "B"
    },
    {
      "id": 19,
      "difficulty": "easy",
      "question": "⚖️ 10.5 kg - 9.0 kg = ?",
      "options": { "A": "1.4 kg", "B": "1.5 kg", "C": "1.6 kg", "D": "1.7 kg" },
      "correct_answer": "B"
    },
    {
      "id": 20,
      "difficulty": "easy",
      "question": "📏 12.3 m - 11.2 m = ?",
      "options": { "A": "1.0 m", "B": "1.1 m", "C": "1.2 m", "D": "1.3 m" },
      "correct_answer": "B"
    },

    {
      "id": 21,
      "difficulty": "medium",
      "question": "🏃 A race track is 2.75 km. You ran 1.25 km. How much distance is left?",
      "options": {
        "A": "1.49 km",
        "B": "1.50 km",
        "C": "1.51 km",
        "D": "1.52 km"
      },
      "correct_answer": "B"
    },
    {
      "id": 22,
      "difficulty": "medium",
      "question": "📦 A packet weighs 4.85 kg. You remove 2.35 kg. What's the new weight?",
      "options": {
        "A": "2.49 kg",
        "B": "2.50 kg",
        "C": "2.51 kg",
        "D": "2.52 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 23,
      "difficulty": "medium",
      "question": "🍇 Grape bunch was 3.65 kg. You took 1.15 kg. How much remains?",
      "options": {
        "A": "2.49 kg",
        "B": "2.50 kg",
        "C": "2.51 kg",
        "D": "2.52 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 24,
      "difficulty": "medium",
      "question": "📐 15.48 m - 12.98 m = ?",
      "options": { "A": "2.49 m", "B": "2.50 m", "C": "2.51 m", "D": "2.52 m" },
      "correct_answer": "B"
    },
    {
      "id": 25,
      "difficulty": "medium",
      "question": "🚗 Car had 25.75 L petrol. It used 12.25 L. How much petrol is left?",
      "options": {
        "A": "13.49 L",
        "B": "13.50 L",
        "C": "13.51 L",
        "D": "13.52 L"
      },
      "correct_answer": "B"
    },
    {
      "id": 26,
      "difficulty": "medium",
      "question": "⚖️ 18.96 kg - 15.46 kg = ?",
      "options": {
        "A": "3.49 kg",
        "B": "3.50 kg",
        "C": "3.51 kg",
        "D": "3.52 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 27,
      "difficulty": "medium",
      "question": "🍎 Apple basket had 24.85 kg. You sold 14.35 kg. How much is left?",
      "options": {
        "A": "10.49 kg",
        "B": "10.50 kg",
        "C": "10.51 kg",
        "D": "10.52 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 28,
      "difficulty": "medium",
      "question": "📏 32.67 cm - 28.17 cm = ?",
      "options": {
        "A": "4.49 cm",
        "B": "4.50 cm",
        "C": "4.51 cm",
        "D": "4.52 cm"
      },
      "correct_answer": "B"
    },
    {
      "id": 29,
      "difficulty": "medium",
      "question": "🛒 Cloth was 8.95 m long. You cut 3.45 m. What length remains?",
      "options": { "A": "5.49 m", "B": "5.50 m", "C": "5.51 m", "D": "5.52 m" },
      "correct_answer": "B"
    },
    {
      "id": 30,
      "difficulty": "medium",
      "question": "📦 45.75 kg - 42.25 kg = ?",
      "options": {
        "A": "3.49 kg",
        "B": "3.50 kg",
        "C": "3.51 kg",
        "D": "3.52 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 31,
      "difficulty": "medium",
      "question": "🍕 Pizza was 2.85 kg. You ate 1.35 kg. How much is left?",
      "options": {
        "A": "1.49 kg",
        "B": "1.50 kg",
        "C": "1.51 kg",
        "D": "1.52 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 32,
      "difficulty": "medium",
      "question": "📏 56.89 m - 53.39 m = ?",
      "options": { "A": "3.49 m", "B": "3.50 m", "C": "3.51 m", "D": "3.52 m" },
      "correct_answer": "B"
    },
    {
      "id": 33,
      "difficulty": "medium",
      "question": "⚖️ 67.98 kg - 64.48 kg = ?",
      "options": {
        "A": "3.49 kg",
        "B": "3.50 kg",
        "C": "3.51 kg",
        "D": "3.52 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 34,
      "difficulty": "medium",
      "question": "🚌 Bus fare was ₹25.60. You paid ₹20.10 extra. How much was original fare?",
      "options": { "A": "5.49", "B": "5.50", "C": "5.51", "D": "5.52" },
      "correct_answer": "B"
    },
    {
      "id": 35,
      "difficulty": "medium",
      "question": "📐 78.45 cm - 75.95 cm = ?",
      "options": {
        "A": "2.49 cm",
        "B": "2.50 cm",
        "C": "2.51 cm",
        "D": "2.52 cm"
      },
      "correct_answer": "B"
    },
    {
      "id": 36,
      "difficulty": "medium",
      "question": "🍰 Cake was 3.75 kg. You served 1.25 kg. How much cake remains?",
      "options": {
        "A": "2.49 kg",
        "B": "2.50 kg",
        "C": "2.51 kg",
        "D": "2.52 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 37,
      "difficulty": "medium",
      "question": "📏 89.63 m - 86.13 m = ?",
      "options": { "A": "3.49 m", "B": "3.50 m", "C": "3.51 m", "D": "3.52 m" },
      "correct_answer": "B"
    },
    {
      "id": 38,
      "difficulty": "medium",
      "question": "⚖️ 95.87 kg - 92.37 kg = ?",
      "options": {
        "A": "3.49 kg",
        "B": "3.50 kg",
        "C": "3.51 kg",
        "D": "3.52 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 39,
      "difficulty": "medium",
      "question": "🍦 Ice cream tub was 4.65 kg. You ate 2.15 kg. How much is left?",
      "options": {
        "A": "2.49 kg",
        "B": "2.50 kg",
        "C": "2.51 kg",
        "D": "2.52 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 40,
      "difficulty": "medium",
      "question": "📏 100.50 m - 97.00 m = ?",
      "options": { "A": "3.49 m", "B": "3.50 m", "C": "3.51 m", "D": "3.52 m" },
      "correct_answer": "B"
    },

    {
      "id": 41,
      "difficulty": "hard",
      "question": "🏗️ A steel rod was 12.345 m long. You cut 4.567 m. What length remains?",
      "options": {
        "A": "7.777 m",
        "B": "7.778 m",
        "C": "7.779 m",
        "D": "7.780 m"
      },
      "correct_answer": "B"
    },
    {
      "id": 42,
      "difficulty": "hard",
      "question": "⚖️ Metal block was 23.456 kg. You removed 8.765 kg. What's the new weight?",
      "options": {
        "A": "14.690 kg",
        "B": "14.691 kg",
        "C": "14.692 kg",
        "D": "14.693 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 43,
      "difficulty": "hard",
      "question": "📏 34.567 m - 19.876 m = ?",
      "options": {
        "A": "14.690 m",
        "B": "14.691 m",
        "C": "14.692 m",
        "D": "14.693 m"
      },
      "correct_answer": "B"
    },
    {
      "id": 44,
      "difficulty": "hard",
      "question": "🍯 Honey jar had 5.678 kg honey. You used 2.345 kg. How much remains?",
      "options": {
        "A": "3.332 kg",
        "B": "3.333 kg",
        "C": "3.334 kg",
        "D": "3.335 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 45,
      "difficulty": "hard",
      "question": "📦 45.789 kg - 29.876 kg = ?",
      "options": {
        "A": "15.912 kg",
        "B": "15.913 kg",
        "C": "15.914 kg",
        "D": "15.915 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 46,
      "difficulty": "hard",
      "question": "🏃 Race was 8.765 km. You ran 3.456 km. How much distance is left?",
      "options": {
        "A": "5.308 km",
        "B": "5.309 km",
        "C": "5.310 km",
        "D": "5.311 km"
      },
      "correct_answer": "B"
    },
    {
      "id": 47,
      "difficulty": "hard",
      "question": "📐 56.789 cm - 34.567 cm = ?",
      "options": {
        "A": "22.221 cm",
        "B": "22.222 cm",
        "C": "22.223 cm",
        "D": "22.224 cm"
      },
      "correct_answer": "B"
    },
    {
      "id": 48,
      "difficulty": "hard",
      "question": "⚖️ 67.890 kg - 45.678 kg = ?",
      "options": {
        "A": "22.211 kg",
        "B": "22.212 kg",
        "C": "22.213 kg",
        "D": "22.214 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 49,
      "difficulty": "hard",
      "question": "🏠 Tile was 1.234 m long. You cut 0.567 m. What's the remaining length?",
      "options": {
        "A": "0.666 m",
        "B": "0.667 m",
        "C": "0.668 m",
        "D": "0.669 m"
      },
      "correct_answer": "B"
    },
    {
      "id": 50,
      "difficulty": "hard",
      "question": "📦 78.901 kg - 56.789 kg = ?",
      "options": {
        "A": "22.111 kg",
        "B": "22.112 kg",
        "C": "22.113 kg",
        "D": "22.114 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 51,
      "difficulty": "hard",
      "question": "🍫 Chocolate slab was 9.876 kg. You broke 4.321 kg. How much remains?",
      "options": {
        "A": "5.554 kg",
        "B": "5.555 kg",
        "C": "5.556 kg",
        "D": "5.557 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 52,
      "difficulty": "hard",
      "question": "📏 89.012 m - 67.890 m = ?",
      "options": {
        "A": "21.121 m",
        "B": "21.122 m",
        "C": "21.123 m",
        "D": "21.124 m"
      },
      "correct_answer": "B"
    },
    {
      "id": 53,
      "difficulty": "hard",
      "question": "⚖️ 90.123 kg - 78.901 kg = ?",
      "options": {
        "A": "11.221 kg",
        "B": "11.222 kg",
        "C": "11.223 kg",
        "D": "11.224 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 54,
      "difficulty": "hard",
      "question": "📐 12.345 m - 9.876 m = ?",
      "options": {
        "A": "2.468 m",
        "B": "2.469 m",
        "C": "2.470 m",
        "D": "2.471 m"
      },
      "correct_answer": "B"
    },
    {
      "id": 55,
      "difficulty": "hard",
      "question": "🏊 Pool length is 25.750 m. You swam 12.345 m. How much more to swim?",
      "options": {
        "A": "13.404 m",
        "B": "13.405 m",
        "C": "13.406 m",
        "D": "13.407 m"
      },
      "correct_answer": "B"
    },
    {
      "id": 56,
      "difficulty": "hard",
      "question": "📦 34.567 kg - 23.456 kg = ?",
      "options": {
        "A": "11.110 kg",
        "B": "11.111 kg",
        "C": "11.112 kg",
        "D": "11.113 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 57,
      "difficulty": "hard",
      "question": "🍎 Apple crate was 56.789 kg. You sold 34.567 kg. How much is left?",
      "options": {
        "A": "22.221 kg",
        "B": "22.222 kg",
        "C": "22.223 kg",
        "D": "22.224 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 58,
      "difficulty": "hard",
      "question": "📏 67.890 m - 45.678 m = ?",
      "options": {
        "A": "22.211 m",
        "B": "22.212 m",
        "C": "22.213 m",
        "D": "22.214 m"
      },
      "correct_answer": "B"
    },
    {
      "id": 59,
      "difficulty": "hard",
      "question": "⚖️ 78.901 kg - 56.789 kg = ?",
      "options": {
        "A": "22.111 kg",
        "B": "22.112 kg",
        "C": "22.113 kg",
        "D": "22.114 kg"
      },
      "correct_answer": "B"
    },
    {
      "id": 60,
      "difficulty": "hard",
      "question": "📦 Box was 0.987 kg. You removed 0.654 kg. What's the new weight?",
      "options": {
        "A": "0.332 kg",
        "B": "0.333 kg",
        "C": "0.334 kg",
        "D": "0.335 kg"
      },
      "correct_answer": "B"
    }
  ]
}