20 加法 73 等于多少?
20 + 73 = 93
20加法73 等于 93
竖式演算
验算
- 用减法验算:93 − 73 = 20
- 用减法验算:93 − 20 = 73
相关题目
20 + 74 = 94
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19 + 73 = 92
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99 - 6 = 93