{
  "title": "Comparing Decimals - Grade 4 CBSE",
  "total_questions": 100,
  "questions": [
    {"id": 1, "difficulty": "easy", "question": "Which is greater: 0.4 or 0.3?", "options": {"A": "0.3", "B": "0.4", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "B"},
    {"id": 2, "difficulty": "easy", "question": "Which is smaller: 0.7 or 0.9?", "options": {"A": "0.7", "B": "0.9", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "A"},
    {"id": 3, "difficulty": "easy", "question": "Compare: 0.5 ○ 0.5", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "C"},
    {"id": 4, "difficulty": "easy", "question": "Which decimal is the largest: 0.2, 0.5, 0.1?", "options": {"A": "0.2", "B": "0.5", "C": "0.1", "D": "All equal"}, "correct_answer": "B"},
    {"id": 5, "difficulty": "easy", "question": "Which decimal is the smallest: 0.8, 0.6, 0.9?", "options": {"A": "0.8", "B": "0.6", "C": "0.9", "D": "All equal"}, "correct_answer": "B"},
    {"id": 6, "difficulty": "easy", "question": "Compare: 0.9 ○ 0.7", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "A"},
    {"id": 7, "difficulty": "easy", "question": "Which is greater: 0.25 or 0.3?", "options": {"A": "0.25", "B": "0.3", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "B"},
    {"id": 8, "difficulty": "easy", "question": "Compare: 1.2 ○ 1.5", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "B"},
    {"id": 9, "difficulty": "easy", "question": "Which is smaller: 2.5 or 2.3?", "options": {"A": "2.5", "B": "2.3", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "B"},
    {"id": 10, "difficulty": "easy", "question": "Compare: 0.75 ○ 0.57", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "A"},
    {"id": 11, "difficulty": "easy", "question": "Which decimal comes between 0.4 and 0.6?", "options": {"A": "0.3", "B": "0.5", "C": "0.7", "D": "0.8"}, "correct_answer": "B"},
    {"id": 12, "difficulty": "easy", "question": "Compare: 3.0 ○ 3.00", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "C"},
    {"id": 13, "difficulty": "easy", "question": "Which is greater: 0.10 or 0.1?", "options": {"A": "0.10", "B": "0.1", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "C"},
    {"id": 14, "difficulty": "easy", "question": "Compare: 4.5 ○ 4.05", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "A"},
    {"id": 15, "difficulty": "easy", "question": "Which is smaller: 1.25 or 1.52?", "options": {"A": "1.25", "B": "1.52", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "A"},
    {"id": 16, "difficulty": "easy", "question": "Compare: 0.99 ○ 0.9", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "A"},
    {"id": 17, "difficulty": "easy", "question": "Which decimal is the largest: 0.33, 0.3, 0.39?", "options": {"A": "0.33", "B": "0.3", "C": "0.39", "D": "All equal"}, "correct_answer": "C"},
    {"id": 18, "difficulty": "easy", "question": "Compare: 2.75 ○ 2.57", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "A"},
    {"id": 19, "difficulty": "easy", "question": "Which is greater: 5.6 or 5.60?", "options": {"A": "5.6", "B": "5.60", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "C"},
    {"id": 20, "difficulty": "easy", "question": "Compare: 0.08 ○ 0.8", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "B"},

    {"id": 21, "difficulty": "medium", "question": "Arrange in ascending order: 2.34, 2.43, 2.3, 2.04", "options": {"A": "2.04, 2.3, 2.34, 2.43", "B": "2.3, 2.04, 2.34, 2.43", "C": "2.43, 2.34, 2.3, 2.04", "D": "2.04, 2.34, 2.3, 2.43"}, "correct_answer": "A"},
    {"id": 22, "difficulty": "medium", "question": "Which is greater: 3.456 or 3.465?", "options": {"A": "3.456", "B": "3.465", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "B"},
    {"id": 23, "difficulty": "medium", "question": "Compare: 7.089 ○ 7.098", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "B"},
    {"id": 24, "difficulty": "medium", "question": "Arrange in descending order: 4.56, 4.65, 4.06, 4.6", "options": {"A": "4.65, 4.6, 4.56, 4.06", "B": "4.06, 4.56, 4.6, 4.65", "C": "4.65, 4.56, 4.6, 4.06", "D": "4.6, 4.65, 4.56, 4.06"}, "correct_answer": "A"},
    {"id": 25, "difficulty": "medium", "question": "Which is smaller: 5.678 or 5.687?", "options": {"A": "5.678", "B": "5.687", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "A"},
    {"id": 26, "difficulty": "medium", "question": "Compare: 12.345 ○ 12.354", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "B"},
    {"id": 27, "difficulty": "medium", "question": "Find the largest number: 6.78, 6.87, 6.8, 6.08", "options": {"A": "6.78", "B": "6.87", "C": "6.8", "D": "6.08"}, "correct_answer": "B"},
    {"id": 28, "difficulty": "medium", "question": "Compare: 9.999 ○ 10.000", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "B"},
    {"id": 29, "difficulty": "medium", "question": "Which decimal comes between 3.45 and 3.54?", "options": {"A": "3.44", "B": "3.5", "C": "3.55", "D": "3.6"}, "correct_answer": "B"},
    {"id": 30, "difficulty": "medium", "question": "Arrange in ascending order: 7.89, 7.98, 7.8, 7.09", "options": {"A": "7.09, 7.8, 7.89, 7.98", "B": "7.8, 7.09, 7.89, 7.98", "C": "7.98, 7.89, 7.8, 7.09", "D": "7.09, 7.89, 7.8, 7.98"}, "correct_answer": "A"},
    {"id": 31, "difficulty": "medium", "question": "Compare: 15.678 ○ 15.6780", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "C"},
    {"id": 32, "difficulty": "medium", "question": "Which is greater: 8.765 or 8.756?", "options": {"A": "8.765", "B": "8.756", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "A"},
    {"id": 33, "difficulty": "medium", "question": "Find the smallest number: 2.345, 2.435, 2.3, 2.034", "options": {"A": "2.345", "B": "2.435", "C": "2.3", "D": "2.034"}, "correct_answer": "D"},
    {"id": 34, "difficulty": "medium", "question": "Compare: 0.987 ○ 0.978", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "A"},
    {"id": 35, "difficulty": "medium", "question": "Arrange in descending order: 5.67, 5.76, 5.6, 5.07", "options": {"A": "5.76, 5.67, 5.6, 5.07", "B": "5.07, 5.6, 5.67, 5.76", "C": "5.76, 5.6, 5.67, 5.07", "D": "5.67, 5.76, 5.6, 5.07"}, "correct_answer": "A"},
    {"id": 36, "difficulty": "medium", "question": "Which is smaller: 4.321 or 4.312?", "options": {"A": "4.321", "B": "4.312", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "B"},
    {"id": 37, "difficulty": "medium", "question": "Compare: 23.456 ○ 23.465", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "B"},
    {"id": 38, "difficulty": "medium", "question": "Find the largest number: 9.876, 9.867, 9.88, 9.8", "options": {"A": "9.876", "B": "9.867", "C": "9.88", "D": "9.8"}, "correct_answer": "C"},
    {"id": 39, "difficulty": "medium", "question": "Which decimal comes between 6.78 and 6.87?", "options": {"A": "6.77", "B": "6.8", "C": "6.88", "D": "6.9"}, "correct_answer": "B"},
    {"id": 40, "difficulty": "medium", "question": "Compare: 34.567 ○ 34.5670", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "C"},
    {"id": 41, "difficulty": "medium", "question": "Arrange in ascending order: 8.91, 8.19, 8.9, 8.09", "options": {"A": "8.09, 8.19, 8.9, 8.91", "B": "8.19, 8.09, 8.9, 8.91", "C": "8.91, 8.9, 8.19, 8.09", "D": "8.09, 8.9, 8.19, 8.91"}, "correct_answer": "A"},
    {"id": 42, "difficulty": "medium", "question": "Which is greater: 7.654 or 7.645?", "options": {"A": "7.654", "B": "7.645", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "A"},
    {"id": 43, "difficulty": "medium", "question": "Compare: 45.678 ○ 45.687", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "B"},
    {"id": 44, "difficulty": "medium", "question": "Find the smallest number: 3.456, 3.465, 3.4, 3.045", "options": {"A": "3.456", "B": "3.465", "C": "3.4", "D": "3.045"}, "correct_answer": "D"},
    {"id": 45, "difficulty": "medium", "question": "Arrange in descending order: 6.78, 6.87, 6.7, 6.08", "options": {"A": "6.87, 6.78, 6.7, 6.08", "B": "6.08, 6.7, 6.78, 6.87", "C": "6.87, 6.7, 6.78, 6.08", "D": "6.78, 6.87, 6.7, 6.08"}, "correct_answer": "A"},
    {"id": 46, "difficulty": "medium", "question": "Which is smaller: 2.345 or 2.354?", "options": {"A": "2.345", "B": "2.354", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "A"},
    {"id": 47, "difficulty": "medium", "question": "Compare: 56.789 ○ 56.798", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "B"},
    {"id": 48, "difficulty": "medium", "question": "Find the largest number: 4.567, 4.576, 4.57, 4.5", "options": {"A": "4.567", "B": "4.576", "C": "4.57", "D": "4.5"}, "correct_answer": "B"},
    {"id": 49, "difficulty": "medium", "question": "Which decimal comes between 5.67 and 5.76?", "options": {"A": "5.66", "B": "5.7", "C": "5.77", "D": "5.8"}, "correct_answer": "B"},
    {"id": 50, "difficulty": "medium", "question": "Compare: 67.890 ○ 67.8900", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "C"},
    {"id": 51, "difficulty": "medium", "question": "Arrange in ascending order: 9.12, 9.21, 9.1, 9.02", "options": {"A": "9.02, 9.1, 9.12, 9.21", "B": "9.1, 9.02, 9.12, 9.21", "C": "9.21, 9.12, 9.1, 9.02", "D": "9.02, 9.12, 9.1, 9.21"}, "correct_answer": "A"},
    {"id": 52, "difficulty": "medium", "question": "Which is greater: 8.765 or 8.756?", "options": {"A": "8.765", "B": "8.756", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "A"},
    {"id": 53, "difficulty": "medium", "question": "Compare: 78.901 ○ 78.910", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "B"},
    {"id": 54, "difficulty": "medium", "question": "Find the smallest number: 5.678, 5.687, 5.68, 5.068", "options": {"A": "5.678", "B": "5.687", "C": "5.68", "D": "5.068"}, "correct_answer": "D"},
    {"id": 55, "difficulty": "medium", "question": "Arrange in descending order: 7.89, 7.98, 7.8, 7.09", "options": {"A": "7.98, 7.89, 7.8, 7.09", "B": "7.09, 7.8, 7.89, 7.98", "C": "7.98, 7.8, 7.89, 7.09", "D": "7.89, 7.98, 7.8, 7.09"}, "correct_answer": "A"},
    {"id": 56, "difficulty": "medium", "question": "Which is smaller: 3.456 or 3.465?", "options": {"A": "3.456", "B": "3.465", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "A"},
    {"id": 57, "difficulty": "medium", "question": "Compare: 89.012 ○ 89.021", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "B"},
    {"id": 58, "difficulty": "medium", "question": "Find the largest number: 6.789, 6.798, 6.79, 6.7", "options": {"A": "6.789", "B": "6.798", "C": "6.79", "D": "6.7"}, "correct_answer": "B"},
    {"id": 59, "difficulty": "medium", "question": "Which decimal comes between 4.56 and 4.65?", "options": {"A": "4.55", "B": "4.6", "C": "4.66", "D": "4.7"}, "correct_answer": "B"},
    {"id": 60, "difficulty": "medium", "question": "Compare: 90.123 ○ 90.1230", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "C"},

    {"id": 61, "difficulty": "hard", "question": "Arrange in ascending order: 12.345, 12.435, 12.3, 12.034, 12.43", "options": {"A": "12.034, 12.3, 12.345, 12.43, 12.435", "B": "12.3, 12.034, 12.345, 12.43, 12.435", "C": "12.435, 12.43, 12.345, 12.3, 12.034", "D": "12.034, 12.345, 12.3, 12.43, 12.435"}, "correct_answer": "A"},
    {"id": 62, "difficulty": "hard", "question": "Which is greater: 15.6789 or 15.6798?", "options": {"A": "15.6789", "B": "15.6798", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "B"},
    {"id": 63, "difficulty": "hard", "question": "Compare: 123.4567 ○ 123.4576", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "B"},
    {"id": 64, "difficulty": "hard", "question": "Arrange in descending order: 23.456, 23.465, 23.4, 23.045, 23.46", "options": {"A": "23.465, 23.46, 23.456, 23.4, 23.045", "B": "23.045, 23.4, 23.456, 23.46, 23.465", "C": "23.465, 23.456, 23.46, 23.4, 23.045", "D": "23.46, 23.465, 23.456, 23.4, 23.045"}, "correct_answer": "A"},
    {"id": 65, "difficulty": "hard", "question": "Which is smaller: 34.5678 or 34.5687?", "options": {"A": "34.5678", "B": "34.5687", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "A"},
    {"id": 66, "difficulty": "hard", "question": "Compare: 456.7890 ○ 456.7899", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "B"},
    {"id": 67, "difficulty": "hard", "question": "Find the largest number: 45.6789, 45.6798, 45.68, 45.6, 45.678", "options": {"A": "45.6789", "B": "45.6798", "C": "45.68", "D": "45.6"}, "correct_answer": "B"},
    {"id": 68, "difficulty": "hard", "question": "Which decimal comes between 67.89 and 67.98?", "options": {"A": "67.88", "B": "67.9", "C": "67.99", "D": "68.0"}, "correct_answer": "B"},
    {"id": 69, "difficulty": "hard", "question": "Compare: 789.0123 ○ 789.01230", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "C"},
    {"id": 70, "difficulty": "hard", "question": "Arrange in ascending order: 56.789, 56.798, 56.78, 56.079, 56.79", "options": {"A": "56.079, 56.78, 56.789, 56.79, 56.798", "B": "56.78, 56.079, 56.789, 56.79, 56.798", "C": "56.798, 56.79, 56.789, 56.78, 56.079", "D": "56.079, 56.789, 56.78, 56.79, 56.798"}, "correct_answer": "A"},
    {"id": 71, "difficulty": "hard", "question": "Which is greater: 89.0123 or 89.0132?", "options": {"A": "89.0123", "B": "89.0132", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "B"},
    {"id": 72, "difficulty": "hard", "question": "Compare: 234.5678 ○ 234.5687", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "B"},
    {"id": 73, "difficulty": "hard", "question": "Find the smallest number: 67.8901, 67.8910, 67.89, 67.8, 67.089", "options": {"A": "67.8901", "B": "67.8910", "C": "67.89", "D": "67.089"}, "correct_answer": "D"},
    {"id": 74, "difficulty": "hard", "question": "Arrange in descending order: 78.901, 78.910, 78.9, 78.091, 78.91", "options": {"A": "78.91, 78.910, 78.901, 78.9, 78.091", "B": "78.091, 78.9, 78.901, 78.91, 78.910", "C": "78.910, 78.91, 78.901, 78.9, 78.091", "D": "78.901, 78.910, 78.91, 78.9, 78.091"}, "correct_answer": "A"},
    {"id": 75, "difficulty": "hard", "question": "Which is smaller: 123.4567 or 123.4576?", "options": {"A": "123.4567", "B": "123.4576", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "A"},
    {"id": 76, "difficulty": "hard", "question": "Compare: 345.6789 ○ 345.6798", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "B"},
    {"id": 77, "difficulty": "hard", "question": "Find the largest number: 89.0123, 89.0132, 89.01, 89.0, 89.012", "options": {"A": "89.0123", "B": "89.0132", "C": "89.01", "D": "89.0"}, "correct_answer": "B"},
    {"id": 78, "difficulty": "hard", "question": "Which decimal comes between 234.56 and 234.65?", "options": {"A": "234.55", "B": "234.6", "C": "234.66", "D": "234.7"}, "correct_answer": "B"},
    {"id": 79, "difficulty": "hard", "question": "Compare: 456.78901 ○ 456.789010", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "C"},
    {"id": 80, "difficulty": "hard", "question": "Arrange in ascending order: 90.123, 90.132, 90.12, 90.012, 90.13", "options": {"A": "90.012, 90.12, 90.123, 90.13, 90.132", "B": "90.12, 90.012, 90.123, 90.13, 90.132", "C": "90.132, 90.13, 90.123, 90.12, 90.012", "D": "90.012, 90.123, 90.12, 90.13, 90.132"}, "correct_answer": "A"},
    {"id": 81, "difficulty": "hard", "question": "Which is greater: 567.8901 or 567.8910?", "options": {"A": "567.8901", "B": "567.8910", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "B"},
    {"id": 82, "difficulty": "hard", "question": "Compare: 678.9012 ○ 678.9021", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "B"},
    {"id": 83, "difficulty": "hard", "question": "Find the smallest number: 123.4567, 123.4576, 123.45, 123.4, 123.045", "options": {"A": "123.4567", "B": "123.4576", "C": "123.45", "D": "123.045"}, "correct_answer": "D"},
    {"id": 84, "difficulty": "hard", "question": "Arrange in descending order: 234.567, 234.576, 234.56, 234.056, 234.57", "options": {"A": "234.576, 234.57, 234.567, 234.56, 234.056", "B": "234.056, 234.56, 234.567, 234.57, 234.576", "C": "234.576, 234.567, 234.57, 234.56, 234.056", "D": "234.567, 234.576, 234.57, 234.56, 234.056"}, "correct_answer": "A"},
    {"id": 85, "difficulty": "hard", "question": "Which is smaller: 345.6789 or 345.6798?", "options": {"A": "345.6789", "B": "345.6798", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "A"},
    {"id": 86, "difficulty": "hard", "question": "Compare: 789.01234 ○ 789.01243", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "B"},
    {"id": 87, "difficulty": "hard", "question": "Find the largest number: 456.7890, 456.7899, 456.79, 456.7, 456.789", "options": {"A": "456.7890", "B": "456.7899", "C": "456.79", "D": "456.7"}, "correct_answer": "B"},
    {"id": 88, "difficulty": "hard", "question": "Which decimal comes between 567.89 and 567.98?", "options": {"A": "567.88", "B": "567.9", "C": "567.99", "D": "568.0"}, "correct_answer": "B"},
    {"id": 89, "difficulty": "hard", "question": "Compare: 890.12345 ○ 890.123450", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "C"},
    {"id": 90, "difficulty": "hard", "question": "Arrange in ascending order: 678.901, 678.910, 678.9, 678.091, 678.91", "options": {"A": "678.091, 678.9, 678.901, 678.91, 678.910", "B": "678.9, 678.091, 678.901, 678.91, 678.910", "C": "678.910, 678.91, 678.901, 678.9, 678.091", "D": "678.091, 678.901, 678.9, 678.91, 678.910"}, "correct_answer": "A"},
    {"id": 91, "difficulty": "hard", "question": "Which is greater: 901.2345 or 901.2354?", "options": {"A": "901.2345", "B": "901.2354", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "B"},
    {"id": 92, "difficulty": "hard", "question": "Compare: 1234.5678 ○ 1234.5687", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "B"},
    {"id": 93, "difficulty": "hard", "question": "Find the smallest number: 789.0123, 789.0132, 789.01, 789.0, 789.012", "options": {"A": "789.0123", "B": "789.0132", "C": "789.01", "D": "789.0"}, "correct_answer": "D"},
    {"id": 94, "difficulty": "hard", "question": "Arrange in descending order: 901.234, 901.243, 901.23, 901.023, 901.24", "options": {"A": "901.243, 901.24, 901.234, 901.23, 901.023", "B": "901.023, 901.23, 901.234, 901.24, 901.243", "C": "901.243, 901.234, 901.24, 901.23, 901.023", "D": "901.234, 901.243, 901.24, 901.23, 901.023"}, "correct_answer": "A"},
    {"id": 95, "difficulty": "hard", "question": "Which is smaller: 2345.6789 or 2345.6798?", "options": {"A": "2345.6789", "B": "2345.6798", "C": "Both equal", "D": "Cannot compare"}, "correct_answer": "A"},
    {"id": 96, "difficulty": "hard", "question": "Compare: 3456.78901 ○ 3456.78910", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "B"},
    {"id": 97, "difficulty": "hard", "question": "Find the largest number: 901.2345, 901.2354, 901.23, 901.2, 901.234", "options": {"A": "901.2345", "B": "901.2354", "C": "901.23", "D": "901.2"}, "correct_answer": "B"},
    {"id": 98, "difficulty": "hard", "question": "Which decimal comes between 6789.01 and 6789.10?", "options": {"A": "6789.00", "B": "6789.05", "C": "6789.11", "D": "6789.15"}, "correct_answer": "B"},
    {"id": 99, "difficulty": "hard", "question": "Compare: 4567.89012 ○ 4567.890120", "options": {"A": ">", "B": "<", "C": "=", "D": "≠"}, "correct_answer": "C"},
    {"id": 100, "difficulty": "hard", "question": "Arrange in ascending order: 1234.567, 1234.576, 1234.56, 1234.056, 1234.57", "options": {"A": "1234.056, 1234.56, 1234.567, 1234.57, 1234.576", "B": "1234.56, 1234.056, 1234.567, 1234.57, 1234.576", "C": "1234.576, 1234.57, 1234.567, 1234.56, 1234.056", "D": "1234.056, 1234.567, 1234.56, 1234.57, 1234.576"}, "correct_answer": "A"}
  ]
}