72 加法 31 等于多少？
72 + 31 = 103
72加法31 等于 103
竖式演算
验算
- 用减法验算：103 − 31 = 72
- 用减法验算：103 − 72 = 31
相关题目
72 + 30 = 102
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72 + 34 = 106
72 + 35 = 107
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73 + 31 = 104
74 + 31 = 105
70 + 31 = 101
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90 + 29 = 119
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19 + 53 = 72
98 + 61 = 159