33 加法 87 等于多少？
33 + 87 = 120
33加法87 等于 120
竖式演算
验算
- 用减法验算：120 − 87 = 33
- 用减法验算：120 − 33 = 87
相关题目
33 + 86 = 119
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32 + 87 = 119
34 + 87 = 121
31 + 87 = 118
35 + 87 = 122
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