52 加法 9 等于多少?
52 + 9 = 61
52加法9 等于 61
竖式演算
验算
- 用减法验算:61 − 9 = 52
- 用减法验算:61 − 52 = 9
相关题目
52 + 8 = 60
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99 + 40 = 139
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99 - 38 = 61