84 加法 37 等于多少？
84 + 37 = 121
84加法37 等于 121
竖式演算
验算
- 用减法验算：121 − 37 = 84
- 用减法验算：121 − 84 = 37
相关题目
84 + 38 = 122
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85 + 37 = 122
82 + 37 = 119
86 + 37 = 123
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