40.5-0.36*2-0.28的简便计算

问题描述:

40.5-0.36*2-0.28的简便计算
1个回答 分类:数学 2014-10-19

问题解答:

我来补答
40.5-0.36*2-0.28
=40.5-0.72-0.28
=40.5-(0.72+0.28)
=40.5-1
=39.5
 
 
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