81 加法 52 等于多少？
81 + 52 = 133
81加法52 等于 133
竖式演算
验算
- 用减法验算：133 − 52 = 81
- 用减法验算：133 − 81 = 52
相关题目
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82 + 52 = 134
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7 × 19 = 133
19 × 7 = 133