40 加法 11 等于多少？
40 + 11 = 51
40加法11 等于 51
竖式演算
验算
- 用减法验算：51 − 11 = 40
- 用减法验算：51 − 40 = 11
相关题目
40 + 10 = 50
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40 + 8 = 48
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39 + 11 = 50
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