77 加法 6 等于多少？
77 + 6 = 83
77加法6 等于 83
竖式演算
验算
- 用减法验算：83 − 6 = 77
- 用减法验算：83 − 77 = 6
相关题目
77 + 5 = 82
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77 + 9 = 86
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