B Set 3 Unknown

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                "id": 1,
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                "subType": "multiply",
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                "operand2": 4.3,
                "question": "5.9 × 4.3 = ?",
                "answer": 25.37,
                "correctAnswer": "25.37",
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                "id": 2,
                "type": "decimals",
                "subType": "subtract",
                "operand1": 16.9,
                "operand2": 5.7,
                "question": "16.9 - 5.7 = ?",
                "answer": 11.2,
                "correctAnswer": "11.2",
                "difficulty": "normal"
            },
            {
                "id": 3,
                "type": "decimals",
                "subType": "add",
                "operand1": 6,
                "operand2": 6.6,
                "question": "6.0 + 6.6 = ?",
                "answer": 12.6,
                "correctAnswer": "12.6",
                "difficulty": "normal"
            },
            {
                "id": 4,
                "type": "decimals",
                "subType": "add",
                "operand1": 2.7,
                "operand2": 16,
                "question": "2.7 + 16.0 = ?",
                "answer": 18.7,
                "correctAnswer": "18.7",
                "difficulty": "normal"
            },
            {
                "id": 5,
                "type": "decimals",
                "subType": "multiply",
                "operand1": 5,
                "operand2": 3.9,
                "question": "5 × 3.9 = ?",
                "answer": 19.5,
                "correctAnswer": "19.5",
                "difficulty": "normal"
            },
            {
                "id": 6,
                "type": "decimals",
                "subType": "multiply",
                "operand1": 1,
                "operand2": 4.7,
                "question": "1 × 4.7 = ?",
                "answer": 4.7,
                "correctAnswer": "4.7",
                "difficulty": "normal"
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            {
                "id": 7,
                "type": "decimals",
                "subType": "multiply",
                "operand1": 13.8,
                "operand2": 7.2,
                "question": "13.8 × 7.2 = ?",
                "answer": 99.36,
                "correctAnswer": "99.36",
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            {
                "id": 8,
                "type": "decimals",
                "subType": "multiply",
                "operand1": 5,
                "operand2": 9.7,
                "question": "5 × 9.7 = ?",
                "answer": 48.5,
                "correctAnswer": "48.5",
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            {
                "id": 9,
                "type": "decimals",
                "subType": "multiply",
                "operand1": 11.3,
                "operand2": 6.3,
                "question": "11.3 × 6.3 = ?",
                "answer": 71.19,
                "correctAnswer": "71.19",
                "difficulty": "normal"
            },
            {
                "id": 10,
                "type": "decimals",
                "subType": "divide",
                "operand1": 89.6,
                "operand2": 7,
                "question": "89.6 ÷ 7 = ?",
                "answer": 12.8,
                "correctAnswer": "12.8",
                "difficulty": "normal"
            },
            {
                "id": 11,
                "type": "decimals",
                "subType": "multiply",
                "operand1": 13,
                "operand2": 0.1,
                "question": "13 × 0.1 = ?",
                "answer": 1.3,
                "correctAnswer": "1.3",
                "difficulty": "normal"
            },
            {
                "id": 12,
                "type": "decimals",
                "subType": "multiply",
                "operand1": 8.3,
                "operand2": 0.6,
                "question": "8.3 × 0.6 = ?",
                "answer": 4.98,
                "correctAnswer": "4.98",
                "difficulty": "normal"
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            {
                "id": 13,
                "type": "decimals",
                "subType": "add",
                "operand1": 4.1,
                "operand2": 17,
                "question": "4.1 + 17.0 = ?",
                "answer": 21.1,
                "correctAnswer": "21.1",
                "difficulty": "normal"
            },
            {
                "id": 14,
                "type": "decimals",
                "subType": "subtract",
                "operand1": 11.8,
                "operand2": 1.5,
                "question": "11.8 - 1.5 = ?",
                "answer": 10.3,
                "correctAnswer": "10.3",
                "difficulty": "normal"
            },
            {
                "id": 15,
                "type": "decimals",
                "subType": "multiply",
                "operand1": 0.2,
                "operand2": 4.8,
                "question": "0.2 × 4.8 = ?",
                "answer": 0.96,
                "correctAnswer": "0.96",
                "difficulty": "normal"
            },
            {
                "id": 16,
                "type": "decimals",
                "subType": "add",
                "operand1": 20,
                "operand2": 14.5,
                "question": "20.0 + 14.5 = ?",
                "answer": 34.5,
                "correctAnswer": "34.5",
                "difficulty": "normal"
            },
            {
                "id": 17,
                "type": "decimals",
                "subType": "multiply",
                "operand1": 11.6,
                "operand2": 4.7,
                "question": "11.6 × 4.7 = ?",
                "answer": 54.52,
                "correctAnswer": "54.52",
                "difficulty": "normal"
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            {
                "id": 18,
                "type": "decimals",
                "subType": "divide",
                "operand1": 32,
                "operand2": 2,
                "question": "32.0 ÷ 2 = ?",
                "answer": 16,
                "correctAnswer": "16",
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            {
                "id": 19,
                "type": "decimals",
                "subType": "subtract",
                "operand1": 5.2,
                "operand2": 3.3,
                "question": "5.2 - 3.3 = ?",
                "answer": 1.9,
                "correctAnswer": "1.9",
                "difficulty": "normal"
            },
            {
                "id": 20,
                "type": "decimals",
                "subType": "add",
                "operand1": 16.3,
                "operand2": 15.8,
                "question": "16.3 + 15.8 = ?",
                "answer": 32.1,
                "correctAnswer": "32.1",
                "difficulty": "normal"
            }
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