88 加法 1 等于多少？
88 + 1 = 89
88加法1 等于 89
竖式演算
验算
- 用减法验算：89 − 1 = 88
- 用减法验算：89 − 88 = 1
相关题目
88 + 2 = 90
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88 + 7 = 95
88 + 8 = 96
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89 + 1 = 90
86 + 1 = 87
90 + 1 = 91
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56 + 20 = 76
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