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破十法计算方法100以内

更新时间: 2020-11-04 00:00:00     

1、当个位不够减时,就用10减去减数,剩下的数和个位上的数相加,即破十法。

举例说明:17-9这道题,先把17分成10和7,然后用10去和9相减,把10-9得到的1再与前面的7加到一起.

2、破十法:是一种计算方法,即:当个位不够减时,就用10减去减数,剩下的数和个位上的数相加,即破十法。例如:12-7=5(10-7=32+3=5)

关键词: 计算 方法 以内

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