89 加法 18 等于多少？
89 + 18 = 107
89加法18 等于 107
竖式演算
验算
- 用减法验算：107 − 18 = 89
- 用减法验算：107 − 89 = 18
相关题目
89 + 17 = 106
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89 + 22 = 111
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90 + 18 = 108
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91 + 18 = 109
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12 + 95 = 107
74 + 68 = 142
83 + 89 = 172
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20 + 2 = 22
24 + 73 = 97