B Set 81 Unknown

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                "question": "2.6 - 2.5 = ?",
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                "question": "79.6 ÷ 4 = ?",
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                "operand2": 17.4,
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                "question": "8.5 × 8.9 = ?",
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                "id": 5,
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                "question": "19.0 + 14.3 = ?",
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                "id": 9,
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                "operand2": 4,
                "question": "46.0 ÷ 4 = ?",
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                "id": 14,
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                "operand1": 13.9,
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                "question": "13.9 × 0.5 = ?",
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                "id": 15,
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                "operand1": 16.8,
                "operand2": 4,
                "question": "16.8 ÷ 4 = ?",
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                "id": 16,
                "type": "decimals",
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                "operand1": 9.7,
                "operand2": 3.1,
                "question": "9.7 × 3.1 = ?",
                "answer": 30.07,
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                "id": 17,
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                "operand1": 3.2,
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                "question": "3.2 × 8.9 = ?",
                "answer": 28.48,
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                "operand2": 5.9,
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                "id": 19,
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                "operand1": 8.7,
                "operand2": 0.3,
                "question": "8.7 × 0.3 = ?",
                "answer": 2.61,
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                "id": 20,
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                "operand1": 13.3,
                "operand2": 4.8,
                "question": "13.3 - 4.8 = ?",
                "answer": 8.5,
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