B Set 38 Unknown

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                "question": "Balance the scale: 4 + 9 = 2 + ?",
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                "id": 2,
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                "question": "Balance the scale: 6 + 8 = 3 + ?",
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                "id": 3,
                "type": "balance-scale",
                "subType": "multiplication-balance",
                "question": "If left side = 9 × 4, what does the right side equal to balance the scale?",
                "answer": 36,
                "correctAnswer": "36",
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                "id": 4,
                "type": "balance-scale",
                "subType": "multiplication-balance",
                "question": "If left side = 3 × 7, what does the right side equal to balance the scale?",
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                "id": 5,
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                "id": 6,
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                "id": 9,
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                "id": 10,
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                "id": 11,
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                "question": "If left side = 5 × 2, what does the right side equal to balance the scale?",
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                "id": 12,
                "type": "balance-scale",
                "subType": "multiplication-balance",
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                "answer": 18,
                "correctAnswer": "18",
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                "id": 13,
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                "id": 14,
                "type": "balance-scale",
                "subType": "multiplication-balance",
                "question": "If left side = 10 × 10, what does the right side equal to balance the scale?",
                "answer": 100,
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                "id": 15,
                "type": "balance-scale",
                "subType": "multiplication-balance",
                "question": "If left side = 4 × 7, what does the right side equal to balance the scale?",
                "answer": 28,
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                "type": "balance-scale",
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                "id": 17,
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                "id": 18,
                "type": "balance-scale",
                "subType": "missing-addend",
                "question": "Balance the scale: 1 + __ = 3",
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                "id": 19,
                "type": "balance-scale",
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                "id": 20,
                "type": "balance-scale",
                "subType": "multiplication-balance",
                "question": "If left side = 5 × 9, what does the right side equal to balance the scale?",
                "answer": 45,
                "correctAnswer": "45",
                "difficulty": "hard"
            }
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