17 加法 38 等于多少？
17 + 38 = 55
17加法38 等于 55
竖式演算
验算
- 用减法验算：55 − 38 = 17
- 用减法验算：55 − 17 = 38
相关题目
17 + 37 = 54
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16 + 38 = 54
18 + 38 = 56
15 + 38 = 53
19 + 38 = 57
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2 + 53 = 55
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