89 加法 23 等于多少？
89 + 23 = 112
89加法23 等于 112
竖式演算
验算
- 用减法验算：112 − 23 = 89
- 用减法验算：112 − 89 = 23
相关题目
89 + 22 = 111
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88 + 23 = 111
90 + 23 = 113
87 + 23 = 110
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