B Set 99 Unknown

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                "operand2": 6,
                "question": "49.2 ÷ 6 = ?",
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                "type": "decimals",
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                "operand1": 10,
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                "question": "10 × 1.1 = ?",
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                "operand1": 12.1,
                "operand2": 7.3,
                "question": "12.1 × 7.3 = ?",
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                "operand2": 5.1,
                "question": "9.1 - 5.1 = ?",
                "answer": 4,
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                "operand1": 1.7,
                "operand2": 19.7,
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                "operand1": 12.3,
                "operand2": 7.2,
                "question": "12.3 × 7.2 = ?",
                "answer": 88.56,
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                "id": 20,
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                "subType": "subtract",
                "operand1": 16.8,
                "operand2": 12,
                "question": "16.8 - 12.0 = ?",
                "answer": 4.8,
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