71 加法 6 等于多少？
71 + 6 = 77
71加法6 等于 77
竖式演算
验算
- 用减法验算：77 − 6 = 71
- 用减法验算：77 − 71 = 6
相关题目
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71 + 9 = 80
71 + 2 = 73
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