2 加法 71 等于多少？
2 + 71 = 73
2加法71 等于 73
竖式演算
验算
- 用减法验算：73 − 71 = 2
- 用减法验算：73 − 2 = 71
相关题目
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3 + 71 = 74
4 + 71 = 75
5 + 71 = 76
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