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三位数除以两位数的笔算方法
更新时间: 2020-09-16 00:00:00  

从高位除起。被除数先看前两位,如果小于除数就用3位去除以除数;如果被除数前两位大于除数且不能除净,则商为两者最大公约数,被除数余数与第三位数照抬,再次除以除数;此时小于除数则完成计算,大于则重复如上步骤,直到余数小于除数,完成计算。

关键词: 位数 除以 笔算 方法

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