B Set 91 Unknown

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                "operand1": 6.2,
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                "question": "6.2 × 5.6 = ?",
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                "operand1": 4.4,
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                "question": "4.4 - 3.9 = ?",
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                "operand1": 16.5,
                "operand2": 6.2,
                "question": "16.5 + 6.2 = ?",
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                "id": 20,
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                "operand1": 18.7,
                "operand2": 7.1,
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                "answer": 25.8,
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