68 加法 4 等于多少?
68 + 4 = 72
68加法4 等于 72
竖式演算
验算
- 用减法验算:72 − 4 = 68
- 用减法验算:72 − 68 = 4
相关题目
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68 + 1 = 69
68 + 7 = 75
68 + 8 = 76
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