19 加法 52 等于多少？
19 + 52 = 71
19加法52 等于 71
竖式演算
验算
- 用减法验算：71 − 52 = 19
- 用减法验算：71 − 19 = 52
相关题目
19 + 51 = 70
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20 + 52 = 72
18 + 52 = 70
21 + 52 = 73
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2 + 69 = 71
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