66 加法 6 等于多少？
66 + 6 = 72
66加法6 等于 72
竖式演算
验算
- 用减法验算：72 − 6 = 66
- 用减法验算：72 − 66 = 6
相关题目
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66 + 9 = 75
66 + 2 = 68
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2 + 70 = 72
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2 × 36 = 72