71 加法 2 等于多少？
71 + 2 = 73
71加法2 等于 73
竖式演算
验算
- 用减法验算：73 − 2 = 71
- 用减法验算：73 − 71 = 2
相关题目
71 + 1 = 72
71 + 3 = 74
71 + 4 = 75
71 + 5 = 76
71 + 6 = 77
71 + 7 = 78
71 + 8 = 79
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72 + 2 = 74
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