42 加法 11 等于多少？
42 + 11 = 53
42加法11 等于 53
竖式演算
验算
- 用减法验算：53 − 11 = 42
- 用减法验算：53 − 42 = 11
相关题目
42 + 10 = 52
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43 + 11 = 54
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44 + 11 = 55
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