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2.5×3.8积是几位小数
更新时间： 2020-10-03 00:00:00  

二点五乘三点八等于九点五。根据四则运算法则，二点五乘三点八等于九点五。只有一位小数。若要求保留两位小数，最后的零也要保留，就是两位小数。乘法是指将相同的数加起来的快捷方式。其运算结果称为积。从哲学角度解析，乘法是加法的量变导致的质变结果。

关键词： 小数

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