23 加法 77 等于多少？
23 + 77 = 100
23加法77 等于 100
竖式演算
验算
- 用减法验算：100 − 77 = 23
- 用减法验算：100 − 23 = 77
相关题目
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25 + 77 = 102
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2 + 98 = 100
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