B Set 77 Unknown

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                "question": "3 × 1 = ?",
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                "operand1": 1.8,
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                "id": 17,
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                "operand1": 3.6,
                "operand2": 2,
                "question": "3.6 ÷ 2 = ?",
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                "id": 20,
                "type": "decimals",
                "subType": "divide",
                "operand1": 50.1,
                "operand2": 3,
                "question": "50.1 ÷ 3 = ?",
                "answer": 16.7,
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