70 加法 81 等于多少？
70 + 81 = 151
70加法81 等于 151
竖式演算
验算
- 用减法验算：151 − 81 = 70
- 用减法验算：151 − 70 = 81
相关题目
70 + 80 = 150
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71 + 81 = 152
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48 + 48 = 96