{
  "title": "Multiplication - Properties of Multiplication",
  "total_questions": 60,
  "questions": [
    {
      "id": 1,
      "difficulty": "Easy",
      "question": "Which number gives the same number when multiplied? (Identity Property)",
      "options": { "A": "0", "B": "1", "C": "2", "D": "5" },
      "correct_answer": "B"
    },
    {
      "id": 2,
      "difficulty": "Easy",
      "question": "5 × 1 = ?",
      "options": { "A": "0", "B": "1", "C": "5", "D": "10" },
      "correct_answer": "C"
    },
    {
      "id": 3,
      "difficulty": "Easy",
      "question": "1 × 9 = ?",
      "options": { "A": "9", "B": "10", "C": "8", "D": "19" },
      "correct_answer": "A"
    },
    {
      "id": 4,
      "difficulty": "Easy",
      "question": "What is 7 × 0?",
      "options": { "A": "7", "B": "0", "C": "14", "D": "70" },
      "correct_answer": "B"
    },
    {
      "id": 5,
      "difficulty": "Easy",
      "question": "0 × 12 = ?",
      "options": { "A": "12", "B": "120", "C": "0", "D": "1" },
      "correct_answer": "C"
    },
    {
      "id": 6,
      "difficulty": "Easy",
      "question": "2 × 3 = 3 × 2 shows which property?",
      "options": {
        "A": "Zero Property",
        "B": "Identity Property",
        "C": "Commutative Property",
        "D": "Addition Property"
      },
      "correct_answer": "C"
    },
    {
      "id": 7,
      "difficulty": "Easy",
      "question": "6 × 1 = ?",
      "options": { "A": "0", "B": "6", "C": "7", "D": "16" },
      "correct_answer": "B"
    },
    {
      "id": 8,
      "difficulty": "Easy",
      "question": "Which property: 4 × 0 = 0?",
      "options": {
        "A": "Zero Property",
        "B": "Identity Property",
        "C": "Commutative Property",
        "D": "Skip Counting"
      },
      "correct_answer": "A"
    },
    {
      "id": 9,
      "difficulty": "Easy",
      "question": "8 × 1 = ?",
      "options": { "A": "10", "B": "1", "C": "8", "D": "18" },
      "correct_answer": "C"
    },
    {
      "id": 10,
      "difficulty": "Easy",
      "question": "0 × 15 = ?",
      "options": { "A": "1", "B": "15", "C": "150", "D": "0" },
      "correct_answer": "D"
    },
    {
      "id": 11,
      "difficulty": "Easy",
      "question": "3 × 2 = 2 × 3 shows:",
      "options": {
        "A": "Zero Property",
        "B": "Commutative Property",
        "C": "Identity Property",
        "D": "No Property"
      },
      "correct_answer": "B"
    },
    {
      "id": 12,
      "difficulty": "Easy",
      "question": "1 × 11 = ?",
      "options": { "A": "1", "B": "11", "C": "110", "D": "0" },
      "correct_answer": "B"
    },
    {
      "id": 13,
      "difficulty": "Easy",
      "question": "To keep number same, multiply by:",
      "options": { "A": "0", "B": "1", "C": "2", "D": "10" },
      "correct_answer": "B"
    },
    {
      "id": 14,
      "difficulty": "Easy",
      "question": "10 × 0 = ?",
      "options": { "A": "10", "B": "100", "C": "0", "D": "1" },
      "correct_answer": "C"
    },
    {
      "id": 15,
      "difficulty": "Easy",
      "question": "Which stays same: 6 × 1 or 6 × 0?",
      "options": { "A": "6 × 1", "B": "6 × 0", "C": "Both", "D": "None" },
      "correct_answer": "A"
    },
    {
      "id": 16,
      "difficulty": "Easy",
      "question": "9 × 0 = ?",
      "options": { "A": "0", "B": "9", "C": "90", "D": "1" },
      "correct_answer": "A"
    },
    {
      "id": 17,
      "difficulty": "Easy",
      "question": "7 × 1 = ?",
      "options": { "A": "1", "B": "8", "C": "7", "D": "0" },
      "correct_answer": "C"
    },
    {
      "id": 18,
      "difficulty": "Easy",
      "question": "Which is same by commutative property?",
      "options": {
        "A": "4 × 3 = 3 × 4",
        "B": "4 × 3 = 4 + 3",
        "C": "4 × 3 = 3 + 4",
        "D": "4 × 3 = 40"
      },
      "correct_answer": "A"
    },
    {
      "id": 19,
      "difficulty": "Easy",
      "question": "0 multiplied by any number gives:",
      "options": { "A": "0", "B": "1", "C": "Same number", "D": "Big number" },
      "correct_answer": "A"
    },
    {
      "id": 20,
      "difficulty": "Easy",
      "question": "1 multiplied by any number gives:",
      "options": { "A": "0", "B": "1", "C": "Same number", "D": "Double" },
      "correct_answer": "C"
    },

    {
      "id": 21,
      "difficulty": "Medium",
      "question": "Which pair shows commutative property?",
      "options": {
        "A": "5 × 0 = 0",
        "B": "7 × 1 = 7",
        "C": "4 × 6 = 6 × 4",
        "D": "0 × 3 = 0"
      },
      "correct_answer": "C"
    },
    {
      "id": 22,
      "difficulty": "Medium",
      "question": "12 × 1 = ?",
      "options": { "A": "10", "B": "11", "C": "12", "D": "1" },
      "correct_answer": "C"
    },
    {
      "id": 23,
      "difficulty": "Medium",
      "question": "0 × 25 = ?",
      "options": { "A": "25", "B": "0", "C": "250", "D": "1" },
      "correct_answer": "B"
    },
    {
      "id": 24,
      "difficulty": "Medium",
      "question": "Which number keeps value same when multiplying?",
      "options": { "A": "0", "B": "2", "C": "1", "D": "5" },
      "correct_answer": "C"
    },
    {
      "id": 25,
      "difficulty": "Medium",
      "question": "Which property: 11 × 0 = 0?",
      "options": {
        "A": "Identity",
        "B": "Zero Property",
        "C": "Commutative",
        "D": "Division"
      },
      "correct_answer": "B"
    },
    {
      "id": 26,
      "difficulty": "Medium",
      "question": "Which shows identity property?",
      "options": {
        "A": "6 × 1 = 6",
        "B": "6 × 0 = 0",
        "C": "6 × 2 = 12",
        "D": "6 × 6 = 36"
      },
      "correct_answer": "A"
    },
    {
      "id": 27,
      "difficulty": "Medium",
      "question": "Which shows zero property?",
      "options": {
        "A": "9 × 1 = 9",
        "B": "9 × 0 = 0",
        "C": "9 × 9 = 81",
        "D": "9 × 2 = 18"
      },
      "correct_answer": "B"
    },
    {
      "id": 28,
      "difficulty": "Medium",
      "question": "Which is same: 7 × 4 and ___?",
      "options": { "A": "4 × 7", "B": "7 × 1", "C": "7 × 0", "D": "7 + 4" },
      "correct_answer": "A"
    },
    {
      "id": 29,
      "difficulty": "Medium",
      "question": "What is 13 × 1?",
      "options": { "A": "1", "B": "13", "C": "130", "D": "0" },
      "correct_answer": "B"
    },
    {
      "id": 30,
      "difficulty": "Medium",
      "question": "Which number gives 0 when multiplied?",
      "options": { "A": "1", "B": "2", "C": "0", "D": "10" },
      "correct_answer": "C"
    },
    {
      "id": 31,
      "difficulty": "Medium",
      "question": "Which is commutative?",
      "options": {
        "A": "8 × 2 = 16",
        "B": "8 × 2 = 2 × 8",
        "C": "8 × 2 = 20",
        "D": "8 × 2 = 80"
      },
      "correct_answer": "B"
    },
    {
      "id": 32,
      "difficulty": "Medium",
      "question": "15 × 1 = ?",
      "options": { "A": "15", "B": "10", "C": "1", "D": "150" },
      "correct_answer": "A"
    },
    {
      "id": 33,
      "difficulty": "Medium",
      "question": "0 × 19 = ?",
      "options": { "A": "19", "B": "1", "C": "0", "D": "190" },
      "correct_answer": "C"
    },
    {
      "id": 34,
      "difficulty": "Medium",
      "question": "Which is identity property?",
      "options": {
        "A": "3 × 1 = 3",
        "B": "3 × 0 = 0",
        "C": "3 × 3 = 9",
        "D": "3 × 4 = 12"
      },
      "correct_answer": "A"
    },
    {
      "id": 35,
      "difficulty": "Medium",
      "question": "Which one: 9 × 0 = 0 is?",
      "options": {
        "A": "Commutative",
        "B": "Zero Property",
        "C": "Identity Property",
        "D": "None"
      },
      "correct_answer": "B"
    },
    {
      "id": 36,
      "difficulty": "Medium",
      "question": "Which pair is equal due to commutative?",
      "options": {
        "A": "5 × 3 = 3 × 5",
        "B": "5 × 3 = 5 × 0",
        "C": "5 × 3 = 5 × 1",
        "D": "5 × 3 = 5 + 3"
      },
      "correct_answer": "A"
    },
    {
      "id": 37,
      "difficulty": "Medium",
      "question": "Which keeps number same?",
      "options": {
        "A": "Multiply by 1",
        "B": "Multiply by 2",
        "C": "Multiply by 5",
        "D": "Multiply by 0"
      },
      "correct_answer": "A"
    },
    {
      "id": 38,
      "difficulty": "Medium",
      "question": "Which always gives 0?",
      "options": { "A": "n × 1", "B": "n × 2", "C": "n × 0", "D": "n × n" },
      "correct_answer": "C"
    },
    {
      "id": 39,
      "difficulty": "Medium",
      "question": "Which one is true?",
      "options": {
        "A": "4 × 7 = 7 × 4",
        "B": "4 × 7 = 4 + 7",
        "C": "4 × 7 = 7",
        "D": "4 × 7 = 0"
      },
      "correct_answer": "A"
    },
    {
      "id": 40,
      "difficulty": "Medium",
      "question": "16 × 1 = ?",
      "options": { "A": "17", "B": "16", "C": "1", "D": "0" },
      "correct_answer": "B"
    },

    {
      "id": 41,
      "difficulty": "Hard",
      "question": "Which is commutative: 6 × 9 = ?",
      "options": { "A": "6 × 0", "B": "9 × 6", "C": "6 + 9", "D": "6 × 1" },
      "correct_answer": "B"
    },
    {
      "id": 42,
      "difficulty": "Hard",
      "question": "Which property: 20 × 1 = 20?",
      "options": {
        "A": "Zero",
        "B": "Identity",
        "C": "Commutative",
        "D": "Repeated Addition"
      },
      "correct_answer": "B"
    },
    {
      "id": 43,
      "difficulty": "Hard",
      "question": "Which is zero property?",
      "options": {
        "A": "15 × 1 = 15",
        "B": "15 × 0 = 0",
        "C": "15 × 2 = 30",
        "D": "15 × 15"
      },
      "correct_answer": "B"
    },
    {
      "id": 44,
      "difficulty": "Hard",
      "question": "Which pair is equal by commutative property?",
      "options": {
        "A": "12 × 6 = 6 × 12",
        "B": "12 × 6 = 12 × 0",
        "C": "12 × 6 = 12",
        "D": "12 × 6 = 18"
      },
      "correct_answer": "A"
    },
    {
      "id": 45,
      "difficulty": "Hard",
      "question": "Which shows identity property?",
      "options": {
        "A": "18 × 1 = 18",
        "B": "18 × 0 = 0",
        "C": "18 × 2 = 36",
        "D": "18 × 5 = 90"
      },
      "correct_answer": "A"
    },
    {
      "id": 46,
      "difficulty": "Hard",
      "question": "Which gives 0 always?",
      "options": { "A": "n × 1", "B": "n × n", "C": "n × 0", "D": "n × 2" },
      "correct_answer": "C"
    },
    {
      "id": 47,
      "difficulty": "Hard",
      "question": "Which is same? 14 × 3 equals:",
      "options": { "A": "3 × 14", "B": "14 × 1", "C": "14 × 0", "D": "14 × 2" },
      "correct_answer": "A"
    },
    {
      "id": 48,
      "difficulty": "Hard",
      "question": "29 × 1 = ?",
      "options": { "A": "29", "B": "1", "C": "0", "D": "290" },
      "correct_answer": "A"
    },
    {
      "id": 49,
      "difficulty": "Hard",
      "question": "33 × 0 = ?",
      "options": { "A": "33", "B": "330", "C": "0", "D": "3" },
      "correct_answer": "C"
    },
    {
      "id": 50,
      "difficulty": "Hard",
      "question": "Which is commutative?",
      "options": {
        "A": "10 × 3 = 3 × 10",
        "B": "10 × 3 = 10 × 0",
        "C": "10 × 3 = 30 × 3",
        "D": "10 × 3 = 13"
      },
      "correct_answer": "A"
    },
    {
      "id": 51,
      "difficulty": "Hard",
      "question": "17 × 1 = ?",
      "options": { "A": "17", "B": "1", "C": "0", "D": "170" },
      "correct_answer": "A"
    },
    {
      "id": 52,
      "difficulty": "Hard",
      "question": "17 × 0 = ?",
      "options": { "A": "17", "B": "170", "C": "0", "D": "1" },
      "correct_answer": "C"
    },
    {
      "id": 53,
      "difficulty": "Hard",
      "question": "Which is identity property?",
      "options": {
        "A": "22 × 1 = 22",
        "B": "22 × 0 = 0",
        "C": "22 × 2 = 44",
        "D": "22 × 22"
      },
      "correct_answer": "A"
    },
    {
      "id": 54,
      "difficulty": "Hard",
      "question": "Which is true by commutative property?",
      "options": {
        "A": "9 × 8 = 8 × 9",
        "B": "9 × 8 = 0",
        "C": "9 × 8 = 17",
        "D": "9 × 8 = 98"
      },
      "correct_answer": "A"
    },
    {
      "id": 55,
      "difficulty": "Hard",
      "question": "Which gives same number?",
      "options": {
        "A": "Multiply by 0",
        "B": "Multiply by 1",
        "C": "Multiply by 2",
        "D": "Multiply by 10"
      },
      "correct_answer": "B"
    },
    {
      "id": 56,
      "difficulty": "Hard",
      "question": "Which gives 0?",
      "options": {
        "A": "Multiply by 1",
        "B": "Multiply by 0",
        "C": "Multiply by 5",
        "D": "Multiply by 3"
      },
      "correct_answer": "B"
    },
    {
      "id": 57,
      "difficulty": "Hard",
      "question": "20 × 1 = ?",
      "options": { "A": "1", "B": "0", "C": "20", "D": "21" },
      "correct_answer": "C"
    },
    {
      "id": 58,
      "difficulty": "Hard",
      "question": "30 × 0 = ?",
      "options": { "A": "30", "B": "0", "C": "300", "D": "3" },
      "correct_answer": "B"
    },
    {
      "id": 59,
      "difficulty": "Hard",
      "question": "Which statement is correct?",
      "options": {
        "A": "7 × 2 = 2 × 7",
        "B": "7 × 2 = 7",
        "C": "7 × 2 = 0",
        "D": "7 × 2 = 27"
      },
      "correct_answer": "A"
    },
    {
      "id": 60,
      "difficulty": "Hard",
      "question": "Identity property example:",
      "options": {
        "A": "9 × 0 = 0",
        "B": "9 × 1 = 9",
        "C": "9 × 9 = 81",
        "D": "9 × 2 = 18"
      },
      "correct_answer": "B"
    }
  ]
}