{
  "title": "Subtraction of Rational Numbers - Grade 8 CBSE",
  "total_questions": 100,
  "questions": [
    {"id": 1, "difficulty": "easy", "question": "What is 3/4 - 1/4?", "options": {"A": "1/4", "B": "1/2", "C": "2/4", "D": "3/4"}, "correct_answer": "B"},
    {"id": 2, "difficulty": "easy", "question": "Subtract: 5/6 - 1/6", "options": {"A": "1/3", "B": "2/3", "C": "4/6", "D": "1/2"}, "correct_answer": "B"},
    {"id": 3, "difficulty": "easy", "question": "What is 0.7 - 0.3?", "options": {"A": "0.4", "B": "0.04", "C": "1.0", "D": "0.1"}, "correct_answer": "A"},
  {
  "id": 4,
  "difficulty": "easy",
  "question": "Calculate: 7/8 - 3/8",
  "options": {
    "A": "1/4",
    "B": "1/2",
    "C": "3/4",
    "D": "5/8"
  },
  "correct_answer": "B"
}
,  {"id": 5, "difficulty": "easy", "question": "Subtract: 0.9 - 0.5", "options": {"A": "0.4", "B": "0.04", "C": "1.4", "D": "0.14"}, "correct_answer": "A"},
    {"id": 6, "difficulty": "easy", "question": "What is 2/3 - 1/3?", "options": {"A": "1/6", "B": "1/3", "C": "2/3", "D": "3/3"}, "correct_answer": "B"},
    {"id": 7, "difficulty": "easy", "question": "Calculate: 4/5 - 2/5", "options": {"A": "1/5", "B": "2/5", "C": "3/5", "D": "4/5"}, "correct_answer": "B"},
    {"id": 8, "difficulty": "easy", "question": "Subtract: 0.8 - 0.2", "options": {"A": "0.6", "B": "0.06", "C": "1.0", "D": "0.1"}, "correct_answer": "A"},
    {"id": 9, "difficulty": "easy", "question": "What is 5/7 - 2/7?", "options": {"A": "1/7", "B": "2/7", "C": "3/7", "D": "4/7"}, "correct_answer": "C"},
    {"id": 10, "difficulty": "easy", "question": "Calculate: 0.6 - 0.1", "options": {"A": "0.5", "B": "0.05", "C": "0.7", "D": "0.07"}, "correct_answer": "A"},
    {"id": 11, "difficulty": "easy", "question": "Subtract: 9/10 - 3/10", "options": {"A": "3/5", "B": "2/5", "C": "1/2", "D": "6/10"}, "correct_answer": "A"},
    {"id": 12, "difficulty": "easy", "question": "What is 0.75 - 0.25?", "options": {"A": "0.5", "B": "0.05", "C": "1.0", "D": "0.1"}, "correct_answer": "A"},
    {"id": 13, "difficulty": "easy", "question": "Calculate: 11/12 - 5/12", "options": {"A": "1/2", "B": "1/3", "C": "1/4", "D": "1/6"}, "correct_answer": "A"},
    {"id": 14, "difficulty": "easy", "question": "Subtract: 0.4 - 0.1", "options": {"A": "0.3", "B": "0.03", "C": "0.5", "D": "0.05"}, "correct_answer": "A"},
    {"id": 15, "difficulty": "easy", "question": "What is 8/9 - 2/9?", "options": {"A": "2/3", "B": "1/3", "C": "4/9", "D": "6/9"}, "correct_answer": "A"},
    {"id": 16, "difficulty": "easy", "question": "Calculate: 0.95 - 0.45", "options": {"A": "0.5", "B": "0.05", "C": "1.4", "D": "0.14"}, "correct_answer": "A"},
    {"id": 17, "difficulty": "easy", "question": "Subtract: 13/14 - 6/14", "options": {"A": "1/2", "B": "1/3", "C": "1/4", "D": "1/7"}, "correct_answer": "A"},
    {"id": 18, "difficulty": "easy", "question": "What is 0.3 - 0.2?", "options": {"A": "0.1", "B": "0.01", "C": "0.5", "D": "0.05"}, "correct_answer": "A"},
    {"id": 19, "difficulty": "easy", "question": "Calculate: 15/16 - 7/16", "options": {"A": "1/2", "B": "1/4", "C": "1/8", "D": "1/16"}, "correct_answer": "A"},
    {"id": 20, "difficulty": "easy", "question": "Subtract: 0.65 - 0.25", "options": {"A": "0.4", "B": "0.04", "C": "0.9", "D": "0.09"}, "correct_answer": "A"},
    {"id": 21, "difficulty": "medium", "question": "What is 3/4 - 1/3?", "options": {"A": "1/12", "B": "5/12", "C": "1/2", "D": "7/12"}, "correct_answer": "B"},
    {"id": 22, "difficulty": "medium", "question": "Subtract: 5/6 - 2/3", "options": {"A": "1/6", "B": "1/3", "C": "1/2", "D": "2/3"}, "correct_answer": "A"},
    {"id": 23, "difficulty": "medium", "question": "Calculate: 7/8 - 1/2", "options": {"A": "1/8", "B": "3/8", "C": "1/4", "D": "5/8"}, "correct_answer": "B"},
    {"id": 24, "difficulty": "medium", "question": "What is 0.75 - 0.4?", "options": {"A": "0.35", "B": "0.45", "C": "0.55", "D": "0.65"}, "correct_answer": "A"},
    {"id": 25, "difficulty": "medium", "question": "Subtract: 2/3 - 1/4", "options": {"A": "1/12", "B": "5/12", "C": "7/12", "D": "11/12"}, "correct_answer": "B"},
    {"id": 26, "difficulty": "medium", "question": "Calculate: 0.9 - 0.25", "options": {"A": "0.65", "B": "0.75", "C": "0.85", "D": "0.95"}, "correct_answer": "A"},
    {"id": 27, "difficulty": "medium", "question": "What is 4/5 - 3/10?", "options": {"A": "1/10", "B": "1/2", "C": "3/5", "D": "7/10"}, "correct_answer": "B"},
    {"id": 28, "difficulty": "medium", "question": "Subtract: 0.6 - 0.125", "options": {"A": "0.475", "B": "0.485", "C": "0.495", "D": "0.5"}, "correct_answer": "A"},
    {"id": 29, "difficulty": "medium", "question": "Calculate: 5/8 - 1/4", "options": {"A": "1/8", "B": "3/8", "C": "1/2", "D": "5/8"}, "correct_answer": "B"},
    {"id": 30, "difficulty": "medium", "question": "What is 0.875 - 0.375?", "options": {"A": "0.4", "B": "0.5", "C": "0.6", "D": "0.7"}, "correct_answer": "B"},
    {"id": 31, "difficulty": "medium", "question": "Subtract: 7/9 - 2/3", "options": {"A": "1/9", "B": "1/3", "C": "4/9", "D": "5/9"}, "correct_answer": "A"},
    {"id": 32, "difficulty": "medium", "question": "Calculate: 0.95 - 0.2", "options": {"A": "0.75", "B": "0.85", "C": "0.9", "D": "1.15"}, "correct_answer": "A"},
    {"id": 33, "difficulty": "medium", "question": "What is 11/12 - 2/3?", "options": {"A": "1/12", "B": "1/6", "C": "1/4", "D": "1/3"}, "correct_answer": "C"},
    {"id": 34, "difficulty": "medium", "question": "Subtract: 0.8 - 0.15", "options": {"A": "0.65", "B": "0.75", "C": "0.85", "D": "0.95"}, "correct_answer": "A"},
    {"id": 35, "difficulty": "medium", "question": "Calculate: 3/4 - 2/5", "options": {"A": "7/20", "B": "9/20", "C": "11/20", "D": "13/20"}, "correct_answer": "A"},
    {"id": 36, "difficulty": "medium", "question": "What is 0.625 - 0.25?", "options": {"A": "0.375", "B": "0.4", "C": "0.425", "D": "0.45"}, "correct_answer": "A"},
    {"id": 37, "difficulty": "medium", "question": "Subtract: 8/9 - 1/2", "options": {"A": "5/18", "B": "7/18", "C": "11/18", "D": "13/18"}, "correct_answer": "B"},
    {"id": 38, "difficulty": "medium", "question": "Calculate: 0.7 - 0.125", "options": {"A": "0.575", "B": "0.585", "C": "0.595", "D": "0.6"}, "correct_answer": "A"},
    {"id": 39, "difficulty": "medium", "question": "What is 5/6 - 3/8?", "options": {"A": "1/12", "B": "5/24", "C": "11/24", "D": "13/24"}, "correct_answer": "C"},
    {"id": 40, "difficulty": "medium", "question": "Subtract: 0.9 - 0.05", "options": {"A": "0.85", "B": "0.86", "C": "0.87", "D": "0.88"}, "correct_answer": "A"},
    {"id": 41, "difficulty": "medium", "question": "Calculate: 7/10 - 1/4", "options": {"A": "9/20", "B": "11/20", "C": "13/20", "D": "17/20"}, "correct_answer": "A"},
    {"id": 42, "difficulty": "medium", "question": "What is 0.4 - 0.125?", "options": {"A": "0.275", "B": "0.285", "C": "0.295", "D": "0.3"}, "correct_answer": "A"},
    {"id": 43, "difficulty": "medium", "question": "Subtract: 9/11 - 1/2", "options": {"A": "5/22", "B": "7/22", "C": "9/22", "D": "13/22"}, "correct_answer": "B"},
    {"id": 44, "difficulty": "medium", "question": "Calculate: 0.6 - 0.45", "options": {"A": "0.15", "B": "0.16", "C": "0.17", "D": "0.18"}, "correct_answer": "A"},
    {"id": 45, "difficulty": "medium", "question": "What is 4/7 - 1/3?", "options": {"A": "5/21", "B": "7/21", "C": "11/21", "D": "13/21"}, "correct_answer": "A"},
    {"id": 46, "difficulty": "medium", "question": "Subtract: 0.875 - 0.4", "options": {"A": "0.475", "B": "0.485", "C": "0.495", "D": "0.5"}, "correct_answer": "A"},
    {"id": 47, "difficulty": "medium", "question": "Calculate: 5/8 - 2/5", "options": {"A": "9/40", "B": "11/40", "C": "13/40", "D": "17/40"}, "correct_answer": "A"},
    {"id": 48, "difficulty": "medium", "question": "What is 0.75 - 0.375?", "options": {"A": "0.375", "B": "0.4", "C": "0.425", "D": "0.45"}, "correct_answer": "A"},
    {"id": 49, "difficulty": "medium", "question": "Subtract: 11/12 - 5/8", "options": {"A": "1/24", "B": "5/24", "C": "7/24", "D": "11/24"}, "correct_answer": "C"},
    {"id": 50, "difficulty": "medium", "question": "Calculate: 0.95 - 0.625", "options": {"A": "0.325", "B": "0.335", "C": "0.345", "D": "0.355"}, "correct_answer": "A"},
    {"id": 51, "difficulty": "medium", "question": "What is 7/9 - 5/12?", "options": {"A": "13/36", "B": "17/36", "C": "19/36", "D": "23/36"}, "correct_answer": "A"},
    {"id": 52, "difficulty": "medium", "question": "Subtract: 0.8 - 0.275", "options": {"A": "0.525", "B": "0.535", "C": "0.545", "D": "0.555"}, "correct_answer": "A"},
    {"id": 53, "difficulty": "medium", "question": "Calculate: 3/5 - 1/4", "options": {"A": "7/20", "B": "9/20", "C": "11/20", "D": "13/20"}, "correct_answer": "A"},
    {"id": 54, "difficulty": "medium", "question": "What is 0.9 - 0.475?", "options": {"A": "0.425", "B": "0.435", "C": "0.445", "D": "0.455"}, "correct_answer": "A"},
    {"id": 55, "difficulty": "medium", "question": "Subtract: 13/14 - 3/7", "options": {"A": "1/2", "B": "3/7", "C": "5/14", "D": "1/7"}, "correct_answer": "A"},
    {"id": 56, "difficulty": "medium", "question": "Calculate: 0.7 - 0.325", "options": {"A": "0.375", "B": "0.385", "C": "0.395", "D": "0.4"}, "correct_answer": "A"},
    {"id": 57, "difficulty": "medium", "question": "What is 5/6 - 4/9?", "options": {"A": "7/18", "B": "11/18", "C": "13/18", "D": "17/18"}, "correct_answer": "A"},
    {"id": 58, "difficulty": "medium", "question": "Subtract: 0.85 - 0.225", "options": {"A": "0.625", "B": "0.635", "C": "0.645", "D": "0.655"}, "correct_answer": "A"},
    {"id": 59, "difficulty": "medium", "question": "Calculate: 11/15 - 2/5", "options": {"A": "1/3", "B": "2/5", "C": "7/15", "D": "8/15"}, "correct_answer": "A"},
    {"id": 60, "difficulty": "medium", "question": "What is 0.95 - 0.125?", "options": {"A": "0.825", "B": "0.835", "C": "0.845", "D": "0.855"}, "correct_answer": "A"},
    {"id": 61, "difficulty": "medium", "question": "Subtract: 7/8 - 5/12", "options": {"A": "11/24", "B": "13/24", "C": "17/24", "D": "19/24"}, "correct_answer": "A"},
    {"id": 62, "difficulty": "medium", "question": "Calculate: 0.6 - 0.275", "options": {"A": "0.325", "B": "0.335", "C": "0.345", "D": "0.355"}, "correct_answer": "A"},
    {"id": 63, "difficulty": "medium", "question": "What is 4/5 - 7/15?", "options": {"A": "1/3", "B": "2/5", "C": "1/2", "D": "3/5"}, "correct_answer": "A"},
    {"id": 64, "difficulty": "medium", "question": "Subtract: 0.875 - 0.45", "options": {"A": "0.425", "B": "0.435", "C": "0.445", "D": "0.455"}, "correct_answer": "A"},
    {"id": 65, "difficulty": "medium", "question": "Calculate: 9/10 - 3/8", "options": {"A": "21/40", "B": "23/40", "C": "27/40", "D": "31/40"}, "correct_answer": "A"},
    {"id": 66, "difficulty": "medium", "question": "What is 0.75 - 0.175?", "options": {"A": "0.575", "B": "0.585", "C": "0.595", "D": "0.6"}, "correct_answer": "A"},
    {"id": 67, "difficulty": "medium", "question": "Subtract: 11/12 - 7/9", "options": {"A": "1/36", "B": "5/36", "C": "7/36", "D": "11/36"}, "correct_answer": "B"},
    {"id": 68, "difficulty": "medium", "question": "Calculate: 0.9 - 0.325", "options": {"A": "0.575", "B": "0.585", "C": "0.595", "D": "0.605"}, "correct_answer": "A"},
    {"id": 69, "difficulty": "medium", "question": "What is 5/7 - 3/14?", "options": {"A": "1/2", "B": "3/7", "C": "4/7", "D": "5/14"}, "correct_answer": "A"},
    {"id": 70, "difficulty": "medium", "question": "Subtract: 0.8 - 0.475", "options": {"A": "0.325", "B": "0.335", "C": "0.345", "D": "0.355"}, "correct_answer": "A"},
    {"id": 71, "difficulty": "hard", "question": "What is 2/3 - 1/4 - 1/6?", "options": {"A": "1/12", "B": "1/6", "C": "1/4", "D": "5/12"}, "correct_answer": "C"},
    {"id": 72, "difficulty": "hard", "question": "Subtract: 3/4 - 1/3 - 1/12", "options": {"A": "1/3", "B": "1/2", "C": "5/12", "D": "7/12"}, "correct_answer": "A"},
    {"id": 73, "difficulty": "hard", "question": "Calculate: 0.875 - 0.25 - 0.125", "options": {"A": "0.5", "B": "0.6", "C": "0.7", "D": "0.8"}, "correct_answer": "A"},
    {"id": 74, "difficulty": "hard", "question": "What is 5/6 - 2/9 - 1/3?", "options": {"A": "1/18", "B": "5/18", "C": "7/18", "D": "11/18"}, "correct_answer": "B"},
    {"id": 75, "difficulty": "hard", "question": "Subtract: 0.9 - 0.15 - 0.05", "options": {"A": "0.7", "B": "0.8", "C": "0.9", "D": "1.0"}, "correct_answer": "A"},
    {"id": 76, "difficulty": "hard", "question": "Calculate: 7/8 - 1/2 - 1/4", "options": {"A": "0", "B": "1/8", "C": "1/4", "D": "3/8"}, "correct_answer": "B"},
    {"id": 77, "difficulty": "hard", "question": "What is 0.75 - 0.2 - 0.05?", "options": {"A": "0.5", "B": "0.6", "C": "0.7", "D": "0.8"}, "correct_answer": "A"},
    {"id": 78, "difficulty": "hard", "question": "Subtract: 11/12 - 1/3 - 1/4", "options": {"A": "1/3", "B": "1/2", "C": "5/12", "D": "7/12"}, "correct_answer": "A"},
    {"id": 79, "difficulty": "hard", "question": "Calculate: 0.6 - 0.125 - 0.075", "options": {"A": "0.4", "B": "0.5", "C": "0.6", "D": "0.7"}, "correct_answer": "A"},
    {"id": 80, "difficulty": "hard", "question": "What is 4/5 - 1/2 - 1/10?", "options": {"A": "1/10", "B": "1/5", "C": "3/10", "D": "2/5"}, "correct_answer": "B"},
    {"id": 81, "difficulty": "hard", "question": "Subtract: 0.95 - 0.3 - 0.15", "options": {"A": "0.5", "B": "0.6", "C": "0.7", "D": "0.8"}, "correct_answer": "A"},
    {"id": 82, "difficulty": "hard", "question": "Calculate: 5/6 - 1/4 - 1/3", "options": {"A": "1/12", "B": "1/6", "C": "1/4", "D": "5/12"}, "correct_answer": "A"},
    {"id": 83, "difficulty": "hard", "question": "What is 0.8 - 0.25 - 0.05?", "options": {"A": "0.5", "B": "0.6", "C": "0.7", "D": "0.8"}, "correct_answer": "A"},
    {"id": 84, "difficulty": "hard", "question": "Subtract: 7/9 - 1/2 - 1/6", "options": {"A": "1/9", "B": "2/9", "C": "1/3", "D": "4/9"}, "correct_answer": "A"},
    {"id": 85, "difficulty": "hard", "question": "Calculate: 0.875 - 0.375 - 0.125", "options": {"A": "0.375", "B": "0.4", "C": "0.425", "D": "0.45"}, "correct_answer": "A"},
    {"id": 86, "difficulty": "hard", "question": "What is 9/10 - 2/5 - 1/4?", "options": {"A": "1/10", "B": "3/20", "C": "1/5", "D": "7/20"}, "correct_answer": "B"},
    {"id": 87, "difficulty": "hard", "question": "Subtract: 0.6 - 0.175 - 0.025", "options": {"A": "0.4", "B": "0.5", "C": "0.6", "D": "0.7"}, "correct_answer": "A"},
    {"id": 88, "difficulty": "hard", "question": "Calculate: 11/12 - 5/8 - 1/6", "options": {"A": "1/24", "B": "1/12", "C": "1/8", "D": "1/6"}, "correct_answer": "A"},
    {"id": 89, "difficulty": "hard", "question": "What is 0.9 - 0.225 - 0.075?", "options": {"A": "0.6", "B": "0.7", "C": "0.8", "D": "0.9"}, "correct_answer": "A"},
    {"id": 90, "difficulty": "hard", "question": "Subtract: 13/14 - 3/7 - 1/4", "options": {"A": "1/7", "B": "3/14", "C": "2/7", "D": "5/14"}, "correct_answer": "B"},
    {"id": 91, "difficulty": "hard", "question": "Calculate: 0.75 - 0.125 - 0.025", "options": {"A": "0.6", "B": "0.7", "C": "0.8", "D": "0.9"}, "correct_answer": "A"},
    {"id": 92, "difficulty": "hard", "question": "What is 8/9 - 1/3 - 1/6?", "options": {"A": "7/18", "B": "1/2", "C": "11/18", "D": "13/18"}, "correct_answer": "A"},
    {"id": 93, "difficulty": "hard", "question": "Subtract: 0.85 - 0.275 - 0.075", "options": {"A": "0.5", "B": "0.6", "C": "0.7", "D": "0.8"}, "correct_answer": "A"},
    {"id": 94, "difficulty": "hard", "question": "Calculate: 17/18 - 2/3 - 1/9", "options": {"A": "1/6", "B": "1/4", "C": "1/3", "D": "5/12"}, "correct_answer": "A"},
    {"id": 95, "difficulty": "hard", "question": "What is 0.95 - 0.375 - 0.025?", "options": {"A": "0.55", "B": "0.6", "C": "0.65", "D": "0.7"}, "correct_answer": "A"},
    {"id": 96, "difficulty": "hard", "question": "Subtract: 19/20 - 3/5 - 1/4", "options": {"A": "1/10", "B": "3/20", "C": "1/5", "D": "1/4"}, "correct_answer": "A"},
    {"id": 97, "difficulty": "hard", "question": "Calculate: 0.8 - 0.175 - 0.025", "options": {"A": "0.6", "B": "0.7", "C": "0.8", "D": "0.9"}, "correct_answer": "A"},
    {"id": 98, "difficulty": "hard", "question": "What is 23/24 - 5/8 - 1/6?", "options": {"A": "1/8", "B": "1/6", "C": "1/4", "D": "1/3"}, "correct_answer": "A"},
    {"id": 99, "difficulty": "hard", "question": "Subtract: 0.9 - 0.425 - 0.075", "options": {"A": "0.4", "B": "0.5", "C": "0.6", "D": "0.7"}, "correct_answer": "A"},
    {"id": 100, "difficulty": "hard", "question": "Calculate: 29/30 - 4/5 - 1/10", "options": {"A": "1/15", "B": "1/10", "C": "1/6", "D": "1/5"}, "correct_answer": "A"}
  ]
}