18 加法 72 等于多少？
18 + 72 = 90
18加法72 等于 90
竖式演算
验算
- 用减法验算：90 − 72 = 18
- 用减法验算：90 − 18 = 72
相关题目
18 + 71 = 89
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17 + 72 = 89
19 + 72 = 91
20 + 72 = 92
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2 + 88 = 90
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