Question

75×0.25+2.6×0.25-0.25简便运算？

Answer 1

原式=75x0.25+2.6x0.25-1x0.25
=(75+2.6-1)x0.25
=76.6x0.25
=38.3x(2x0.25)
=38.3x0.5
=38.3x10÷2
=383÷2
=186.5

Answer 2

75×0.25+2.6×0.25-0.25简便运算？
这道题目的简单方法就是，先提取公约数0.25后再计算较为简单：
75×0.25+2.6×0.25-0.25
=（75+2.6-1）×0.25
=76.6*0.25
=19.15

Answer 3

75×0.25+2.6×0.25-0.25，题目可能抄错，2.6应该是26才有出题的意义。

如果2.6换成26的话，简便运算方式可以提取0.25这个公因数，具体计算过程如下：

75×0.25+26×0.25-0.25

=0.25×（75+26-1）

=0.25×（75+25）

=0.25×100

=25