45×7.4−45+3.6×0.8

问题描述:

4
5
×7.4−
4
5
+3.6×0.8
1个回答 分类:数学 2014-11-27

问题解答:

我来补答
4
5×7.4−
4
5+3.6×0.8,
=0.8×7.4-0.8+3.6×0.8,
=0.8×(7.4-1+3.6),
=0.8×10,
=8.
 
 
展开全文阅读
剩余:2000