12 加法 38 等于多少？
12 + 38 = 50
12加法38 等于 50
竖式演算
验算
- 用减法验算：50 − 38 = 12
- 用减法验算：50 − 12 = 38
相关题目
12 + 37 = 49
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11 + 38 = 49
13 + 38 = 51
10 + 38 = 48
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