(3.4-1.2×0.65）÷0.05的简便运算是怎样的?_数学解答

(3.4-1.2×0.65）÷0.05的简便运算是怎样的?

人气：247 ℃　时间：2020-05-02 01:06:41

解答

(3.4-1.2×0.65）÷0.05
=(3.4-1.2×0.65）×20
=3.4×20-1.2×0.65×20
=68-1.2×13
=68-15.6
=52.4