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如何判断积是几位数
更新时间: 2020-11-01 00:00:00  

判断积的位数的方法:

1、如果两个因数最高位上的数的积等于或大于10,或者虽然小于10,但加上进位来的数以后就等于或大于10,那么它们的积的位数就等于两个因数的位数之和。

2、如果两个因数的最高位上的数的积小于10,而且加上进位来的数以后仍小于10,那么这两个因数的积的位数就比两个因数的位数的和少1。

关键词: 如何 判断 位数

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