34 加法 87 等于多少？
34 + 87 = 121
34加法87 等于 121
竖式演算
验算
- 用减法验算：121 − 87 = 34
- 用减法验算：121 − 34 = 87
相关题目
34 + 86 = 120
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33 + 87 = 120
35 + 87 = 122
32 + 87 = 119
36 + 87 = 123
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22 + 99 = 121
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56 + 67 = 123
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