51 加法 72 等于多少？
51 + 72 = 123
51加法72 等于 123
竖式演算
验算
- 用减法验算：123 − 72 = 51
- 用减法验算：123 − 51 = 72
相关题目
51 + 71 = 122
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3 × 41 = 123