61 加法 60 等于多少？
61 + 60 = 121
61加法60 等于 121
竖式演算
验算
- 用减法验算：121 − 60 = 61
- 用减法验算：121 − 61 = 60
相关题目
61 + 59 = 120
61 + 61 = 122
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60 + 60 = 120
62 + 60 = 122
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