18 加法 90 等于多少?
18 + 90 = 108
18加法90 等于 108
竖式演算
验算
- 用减法验算:108 − 90 = 18
- 用减法验算:108 − 18 = 90
相关题目
18 + 89 = 107
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19 + 90 = 109
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16 + 90 = 106
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4 × 27 = 108
27 × 4 = 108