9 加法 56 等于多少?
9 + 56 = 65
9加法56 等于 65
竖式演算
验算
- 用减法验算:65 − 56 = 9
- 用减法验算:65 − 9 = 56
相关题目
9 + 55 = 64
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2 + 63 = 65
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