B Set 72 Unknown

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                "question": "12.4 - 3.1 = ?",
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                "type": "decimals",
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                "question": "14.2 + 4.5 = ?",
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                "correctAnswer": "18.7",
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                "id": 6,
                "type": "decimals",
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                "question": "16.5 × 6.7 = ?",
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                "id": 7,
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                "question": "12.2 × 2.4 = ?",
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                "question": "8.5 + 3.9 = ?",
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                "id": 9,
                "type": "decimals",
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                "question": "7.4 + 7.1 = ?",
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                "id": 10,
                "type": "decimals",
                "subType": "multiply",
                "operand1": 8.9,
                "operand2": 4,
                "question": "8.9 × 4 = ?",
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                "id": 11,
                "type": "decimals",
                "subType": "divide",
                "operand1": 29.4,
                "operand2": 7,
                "question": "29.4 ÷ 7 = ?",
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                "id": 12,
                "type": "decimals",
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                "operand1": 28.5,
                "operand2": 3,
                "question": "28.5 ÷ 3 = ?",
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                "operand1": 16.3,
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                "question": "16.3 × 1.2 = ?",
                "answer": 19.56,
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                "id": 14,
                "type": "decimals",
                "subType": "divide",
                "operand1": 108,
                "operand2": 6,
                "question": "108.0 ÷ 6 = ?",
                "answer": 18,
                "correctAnswer": "18",
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                "id": 15,
                "type": "decimals",
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                "operand1": 7.5,
                "operand2": 3.2,
                "question": "7.5 × 3.2 = ?",
                "answer": 24,
                "correctAnswer": "24",
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                "id": 16,
                "type": "decimals",
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                "operand1": 9.8,
                "operand2": 11.7,
                "question": "9.8 + 11.7 = ?",
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                "id": 17,
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                "operand1": 12.1,
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                "question": "12.1 - 8.2 = ?",
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                "id": 18,
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                "operand1": 14.1,
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                "id": 19,
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                "operand1": 2.9,
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                "question": "2.9 + 1.5 = ?",
                "answer": 4.4,
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                "id": 20,
                "type": "decimals",
                "subType": "subtract",
                "operand1": 7.6,
                "operand2": 4.7,
                "question": "7.6 - 4.7 = ?",
                "answer": 2.9,
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