{
  "title": "Addition and Subtraction of Expressions - Grade 6 ICSE",
  "total_questions": 60,
  "questions": [
    {
      "id": 1,
      "difficulty": "easy",
      "question": "What is 3x + 2x? 🍎",
      "options": { "A": "4x", "B": "5x", "C": "6x", "D": "x" },
      "correct_answer": "B"
    },
    {
      "id": 2,
      "difficulty": "easy",
      "question": "What is 5y - 2y? 🐤",
      "options": { "A": "2y", "B": "3y", "C": "4y", "D": "y" },
      "correct_answer": "B"
    },
    {
      "id": 3,
      "difficulty": "easy",
      "question": "Add: 4a + 3a = ? ✏️",
      "options": { "A": "6a", "B": "8a", "C": "7a", "D": "5a" },
      "correct_answer": "C"
    },
    {
      "id": 4,
      "difficulty": "easy",
      "question": "Subtract: 8m - 5m = ? 📏",
      "options": { "A": "2m", "B": "3m", "C": "4m", "D": "5m" },
      "correct_answer": "B"
    },
    {
      "id": 5,
      "difficulty": "easy",
      "question": "What is 6p + p? 🎈",
      "options": { "A": "5p", "B": "6p", "C": "7p", "D": "8p" },
      "correct_answer": "C"
    },
    {
      "id": 6,
      "difficulty": "easy",
      "question": "What is 9k - 4k? 🔑",
      "options": { "A": "4k", "B": "5k", "C": "6k", "D": "7k" },
      "correct_answer": "B"
    },
    {
      "id": 7,
      "difficulty": "easy",
      "question": "Add: 2x + 3x + x = ? ➕",
      "options": { "A": "5x", "B": "6x", "C": "7x", "D": "8x" },
      "correct_answer": "B"
    },
    {
      "id": 8,
      "difficulty": "easy",
      "question": "Subtract: 10n - 3n = ? 🚀",
      "options": { "A": "6n", "B": "7n", "C": "8n", "D": "9n" },
      "correct_answer": "B"
    },
    {
      "id": 9,
      "difficulty": "easy",
      "question": "What is 7b + 2b? 📚",
      "options": { "A": "8b", "B": "9b", "C": "10b", "D": "11b" },
      "correct_answer": "B"
    },
    {
      "id": 10,
      "difficulty": "easy",
      "question": "What is 12c - 5c? 🍪",
      "options": { "A": "6c", "B": "7c", "C": "8c", "D": "9c" },
      "correct_answer": "B"
    },
    {
      "id": 11,
      "difficulty": "easy",
      "question": "Add: 5d + 4d = ? 🦆",
      "options": { "A": "8d", "B": "9d", "C": "10d", "D": "11d" },
      "correct_answer": "B"
    },
    {
      "id": 12,
      "difficulty": "easy",
      "question": "Subtract: 15e - 7e = ? 🐘",
      "options": { "A": "7e", "B": "8e", "C": "9e", "D": "10e" },
      "correct_answer": "B"
    },
    {
      "id": 13,
      "difficulty": "easy",
      "question": "What is 8f + f? 🐠",
      "options": { "A": "8f", "B": "9f", "C": "10f", "D": "7f" },
      "correct_answer": "B"
    },
    {
      "id": 14,
      "difficulty": "easy",
      "question": "What is 20g - 12g? 🎁",
      "options": { "A": "7g", "B": "8g", "C": "9g", "D": "10g" },
      "correct_answer": "B"
    },
    {
      "id": 15,
      "difficulty": "easy",
      "question": "Add: 6h + 3h + h = ? 🏠",
      "options": { "A": "9h", "B": "10h", "C": "11h", "D": "12h" },
      "correct_answer": "B"
    },
    {
      "id": 16,
      "difficulty": "easy",
      "question": "Subtract: 18j - 9j = ? 🃏",
      "options": { "A": "8j", "B": "9j", "C": "10j", "D": "11j" },
      "correct_answer": "B"
    },
    {
      "id": 17,
      "difficulty": "easy",
      "question": "What is 11q + 4q? 👑",
      "options": { "A": "14q", "B": "15q", "C": "16q", "D": "17q" },
      "correct_answer": "B"
    },
    {
      "id": 18,
      "difficulty": "easy",
      "question": "What is 25r - 17r? 🐇",
      "options": { "A": "7r", "B": "8r", "C": "9r", "D": "10r" },
      "correct_answer": "B"
    },
    {
      "id": 19,
      "difficulty": "easy",
      "question": "Add: 9s + 2s = ? 🌟",
      "options": { "A": "10s", "B": "11s", "C": "12s", "D": "13s" },
      "correct_answer": "B"
    },
    {
      "id": 20,
      "difficulty": "easy",
      "question": "Subtract: 30t - 21t = ? 🎯",
      "options": { "A": "8t", "B": "9t", "C": "10t", "D": "11t" },
      "correct_answer": "B"
    },

    {
      "id": 21,
      "difficulty": "medium",
      "question": "Simplify: (3x + 4) + (2x + 1) = ? 🧩",
      "options": { "A": "5x + 5", "B": "6x + 5", "C": "5x + 4", "D": "6x + 4" },
      "correct_answer": "A"
    },
    {
      "id": 22,
      "difficulty": "medium",
      "question": "Simplify: (5y - 3) + (2y + 4) = ? 🌈",
      "options": { "A": "7y + 1", "B": "7y + 2", "C": "8y + 1", "D": "8y - 1" },
      "correct_answer": "A"
    },
    {
      "id": 23,
      "difficulty": "medium",
      "question": "Simplify: (7a + 2) - (3a + 1) = ? 🎨",
      "options": { "A": "4a + 1", "B": "5a + 1", "C": "4a + 2", "D": "5a + 2" },
      "correct_answer": "A"
    },
    {
      "id": 24,
      "difficulty": "medium",
      "question": "Simplify: (8m - 5) - (2m - 3) = ? 🚗",
      "options": { "A": "6m - 2", "B": "6m - 8", "C": "5m - 2", "D": "5m - 8" },
      "correct_answer": "A"
    },
    {
      "id": 25,
      "difficulty": "medium",
      "question": "Add: 4x + 3y + 2x + y = ? 🍦",
      "options": {
        "A": "6x + 4y",
        "B": "5x + 4y",
        "C": "6x + 3y",
        "D": "5x + 3y"
      },
      "correct_answer": "A"
    },
    {
      "id": 26,
      "difficulty": "medium",
      "question": "Subtract: (9p + 4) - (3p + 2) = ? 🎪",
      "options": { "A": "6p + 2", "B": "5p + 2", "C": "6p + 1", "D": "5p + 1" },
      "correct_answer": "A"
    },
    {
      "id": 27,
      "difficulty": "medium",
      "question": "Simplify: 2(3x + 1) + 4x = ? 🧮",
      "options": {
        "A": "10x + 2",
        "B": "9x + 2",
        "C": "10x + 1",
        "D": "9x + 1"
      },
      "correct_answer": "A"
    },
    {
      "id": 28,
      "difficulty": "medium",
      "question": "Simplify: 5(2y - 1) - 3y = ? 🏀",
      "options": { "A": "7y - 5", "B": "8y - 5", "C": "7y - 4", "D": "8y - 4" },
      "correct_answer": "A"
    },
    {
      "id": 29,
      "difficulty": "medium",
      "question": "Add: (x + 7) + (2x + 3) + (x + 1) = ? 🎭",
      "options": {
        "A": "4x + 11",
        "B": "3x + 11",
        "C": "4x + 10",
        "D": "3x + 10"
      },
      "correct_answer": "A"
    },
    {
      "id": 30,
      "difficulty": "medium",
      "question": "Subtract: (5a + 8) - (2a + 3) = ? 🎡",
      "options": { "A": "3a + 5", "B": "4a + 5", "C": "3a + 6", "D": "4a + 6" },
      "correct_answer": "A"
    },
    {
      "id": 31,
      "difficulty": "medium",
      "question": "Simplify: 3x + 4 + 2x - 1 = ? 📊",
      "options": { "A": "5x + 3", "B": "6x + 3", "C": "5x + 2", "D": "6x + 2" },
      "correct_answer": "A"
    },
    {
      "id": 32,
      "difficulty": "medium",
      "question": "Simplify: 7y - 2 + 3y + 5 = ? 🚴",
      "options": {
        "A": "10y + 3",
        "B": "9y + 3",
        "C": "10y + 4",
        "D": "9y + 4"
      },
      "correct_answer": "A"
    },
    {
      "id": 33,
      "difficulty": "medium",
      "question": "Add: 2(3m + 1) + (4m + 2) = ? 🎲",
      "options": {
        "A": "10m + 4",
        "B": "9m + 4",
        "C": "10m + 3",
        "D": "9m + 3"
      },
      "correct_answer": "A"
    },
    {
      "id": 34,
      "difficulty": "medium",
      "question": "Subtract: (6n + 9) - 2(2n + 2) = ? 🪀",
      "options": { "A": "2n + 5", "B": "3n + 5", "C": "2n + 6", "D": "3n + 6" },
      "correct_answer": "A"
    },
    {
      "id": 35,
      "difficulty": "medium",
      "question": "Simplify: 4(x + 2) + 3(x - 1) = ? 🏓",
      "options": { "A": "7x + 5", "B": "8x + 5", "C": "7x + 6", "D": "8x + 6" },
      "correct_answer": "A"
    },
    {
      "id": 36,
      "difficulty": "medium",
      "question": "Simplify: 5(2p - 3) - 2(p + 1) = ? 🎳",
      "options": {
        "A": "8p - 17",
        "B": "9p - 17",
        "C": "8p - 16",
        "D": "9p - 16"
      },
      "correct_answer": "A"
    },
    {
      "id": 37,
      "difficulty": "medium",
      "question": "Add: 3x + 2y + 4x + 3y = ? 🍭",
      "options": {
        "A": "7x + 5y",
        "B": "6x + 5y",
        "C": "7x + 6y",
        "D": "6x + 6y"
      },
      "correct_answer": "A"
    },
    {
      "id": 38,
      "difficulty": "medium",
      "question": "Subtract: (8a + 5b) - (3a + 2b) = ? 🎠",
      "options": {
        "A": "5a + 3b",
        "B": "6a + 3b",
        "C": "5a + 4b",
        "D": "6a + 4b"
      },
      "correct_answer": "A"
    },
    {
      "id": 39,
      "difficulty": "medium",
      "question": "Simplify: 2x + 3 + 4x + 2 + x = ? 🎀",
      "options": { "A": "7x + 5", "B": "6x + 5", "C": "7x + 4", "D": "6x + 4" },
      "correct_answer": "A"
    },
    {
      "id": 40,
      "difficulty": "medium",
      "question": "Simplify: 9y - 4 + 2y + 7 - 3y = ? 🪁",
      "options": { "A": "8y + 3", "B": "9y + 3", "C": "8y + 2", "D": "9y + 2" },
      "correct_answer": "A"
    },

    {
      "id": 41,
      "difficulty": "hard",
      "question": "Simplify: 3(x + 4) + 2(2x - 1) - (x + 3) = ? 🧠",
      "options": { "A": "6x + 7", "B": "6x + 8", "C": "7x + 7", "D": "7x + 8" },
      "correct_answer": "A"
    },
    {
      "id": 42,
      "difficulty": "hard",
      "question": "Simplify: 4(2y - 3) - 2(3y + 2) + 5(y - 1) = ? 🏆",
      "options": {
        "A": "7y - 21",
        "B": "8y - 21",
        "C": "7y - 20",
        "D": "8y - 20"
      },
      "correct_answer": "A"
    },
    {
      "id": 43,
      "difficulty": "hard",
      "question": "Add: (3a + 2b - c) + (2a - 3b + 4c) = ? 🌟",
      "options": {
        "A": "5a - b + 3c",
        "B": "5a + b + 3c",
        "C": "5a - b + 4c",
        "D": "5a + b + 4c"
      },
      "correct_answer": "A"
    },
    {
      "id": 44,
      "difficulty": "hard",
      "question": "Subtract: (5x + 3y - 2z) - (2x - 4y + 3z) = ? 🎯",
      "options": {
        "A": "3x + 7y - 5z",
        "B": "3x + 6y - 5z",
        "C": "4x + 7y - 5z",
        "D": "4x + 6y - 5z"
      },
      "correct_answer": "A"
    },
    {
      "id": 45,
      "difficulty": "hard",
      "question": "Simplify: 2[3(x + 2) - 4] + 5x = ? 🏅",
      "options": {
        "A": "12x + 4",
        "B": "11x + 4",
        "C": "11x + 8",
        "D": "10x + 4"
      },
      "correct_answer": "B"
    },
    {
      "id": 46,
      "difficulty": "hard",
      "question": "Simplify: 3(2m - 4) + 2[4 - (m + 1)] = ? 🥇",
      "options": { "A": "4m - 6", "B": "5m - 6", "C": "4m - 5", "D": "5m - 5" },
      "correct_answer": "A"
    },
    {
      "id": 47,
      "difficulty": "hard",
      "question": "Add: 2(x + 3y) + 3(2x - y) + 4(x + y) = ? 🏆",
      "options": {
        "A": "12x + 7y",
        "B": "11x + 7y",
        "C": "12x + 8y",
        "D": "11x + 8y"
      },
      "correct_answer": "A"
    },
    {
      "id": 48,
      "difficulty": "hard",
      "question": "Subtract: 4(3p + 2q) - 2(2p - 3q) = ? 🎪",
      "options": {
        "A": "8p + 14q",
        "B": "9p + 14q",
        "C": "8p + 15q",
        "D": "9p + 15q"
      },
      "correct_answer": "A"
    },
    {
      "id": 49,
      "difficulty": "hard",
      "question": "Simplify: 5{2[x + 3] - 4} + 3x = ? 🧩",
      "options": {
        "A": "13x + 10",
        "B": "14x + 10",
        "C": "13x + 9",
        "D": "14x + 9"
      },
      "correct_answer": "A"
    },
    {
      "id": 50,
      "difficulty": "hard",
      "question": "Simplify: 2(3a - 4b) + 3(2a + b) - (a - 2b) = ? 🎨",
      "options": {
        "A": "11a - 3b",
        "B": "12a - 3b",
        "C": "11a - 4b",
        "D": "12a - 4b"
      },
      "correct_answer": "A"
    },
    {
      "id": 51,
      "difficulty": "hard",
      "question": "Add: (x² + 3x + 2) + (2x² - 4x + 1) = ? 🚀",
      "options": {
        "A": "3x² - x + 3",
        "B": "3x² + x + 3",
        "C": "2x² - x + 3",
        "D": "2x² + x + 3"
      },
      "correct_answer": "A"
    },
    {
      "id": 52,
      "difficulty": "hard",
      "question": "Subtract: (4y² + 2y - 3) - (y² - 3y + 2) = ? 🌈",
      "options": {
        "A": "3y² + 5y - 5",
        "B": "3y² + 6y - 5",
        "C": "4y² + 5y - 5",
        "D": "4y² + 6y - 5"
      },
      "correct_answer": "A"
    },
    {
      "id": 53,
      "difficulty": "hard",
      "question": "Simplify: 3(x² + 2x - 1) + 2(2x² - x + 3) = ? 🍦",
      "options": {
        "A": "7x² + 4x + 3",
        "B": "8x² + 4x + 3",
        "C": "7x² + 3x + 3",
        "D": "8x² + 3x + 3"
      },
      "correct_answer": "A"
    },
    {
      "id": 54,
      "difficulty": "hard",
      "question": "Simplify: 4(2m - 3n) - 2(3m + n) + 5(m - 2n) = ? 🎡",
      "options": {
        "A": "7m - 24n",
        "B": "8m - 24n",
        "C": "7m - 25n",
        "D": "8m - 25n"
      },
      "correct_answer": "A"
    },
    {
      "id": 55,
      "difficulty": "hard",
      "question": "Add: 3(2a + b) + 2(a - 3b) + 4(a + 2b) = ? 🎳",
      "options": {
        "A": "12a + 5b",
        "B": "11a + 5b",
        "C": "12a + 4b",
        "D": "11a + 4b"
      },
      "correct_answer": "A"
    },
    {
      "id": 56,
      "difficulty": "hard",
      "question": "Subtract: 5(3x + 2) - 3(2x - 4) + 2(x + 1) = ? 🎠",
      "options": {
        "A": "11x + 24",
        "B": "12x + 24",
        "C": "11x + 25",
        "D": "12x + 25"
      },
      "correct_answer": "A"
    },
    {
      "id": 57,
      "difficulty": "hard",
      "question": "Simplify: 2[3(x + y) - 2(x - y)] + 4x = ? 🪀",
      "options": {
        "A": "6x + 10y",
        "B": "7x + 10y",
        "C": "6x + 11y",
        "D": "7x + 11y"
      },
      "correct_answer": "A"
    },
    {
      "id": 58,
      "difficulty": "hard",
      "question": "Simplify: 3{2[4 - (x + 1)] + 3x} - 2x = ? 🏓",
      "options": {
        "A": "2x + 18",
        "B": "x + 16",
        "C": "x + 18",
        "D": "3x + 18"
      },
      "correct_answer": "C"
    },
    {
      "id": 59,
      "difficulty": "hard",
      "question": "Add: (5p² - 3p + 2) + (2p² + 4p - 1) + (p² - 2p + 3) = ? 🎭",
      "options": {
        "A": "8p² - p + 4",
        "B": "7p² - p + 4",
        "C": "8p² + p + 4",
        "D": "7p² + p + 4"
      },
      "correct_answer": "A"
    },
    {
      "id": 60,
      "difficulty": "hard",
      "question": "Subtract: (6x² + 4x - 5) - 2(2x² - x + 3) = ? 🎲",
      "options": {
        "A": "2x² + 6x - 11",
        "B": "3x² + 6x - 11",
        "C": "2x² + 7x - 11",
        "D": "3x² + 7x - 11"
      },
      "correct_answer": "A"
    }
  ]
}