29 加法 11 等于多少？
29 + 11 = 40
29加法11 等于 40
竖式演算
验算
- 用减法验算：40 − 11 = 29
- 用减法验算：40 − 29 = 11
相关题目
29 + 10 = 39
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29 + 14 = 43
29 + 8 = 37
29 + 15 = 44
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28 + 11 = 39
30 + 11 = 41
31 + 11 = 42
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2 + 38 = 40
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