您好,这道题目的解答过程如下图所示,答案为43.2,希望我的回答能对您有所帮助,望采纳~
(1.25✘8-0.4)x4.5
=(10-0.4)x4.5
=45-1.8
=43.2
以上就是简便计算过程。
(1.25X8-0.4)X4.5
=(10-0.4)X4.5
=10X4.5-0.4X4.5
=45-1.8
=43.2
可以简便运算:(1.25Ⅹ8-0.4)X4.5=(10-0.4)ⅹ(5-0.5)=50-5-2+0.2=43.2
先算括号里的乘除加减后算外面如下
=(10-0.4)×4.5
=9.6×4.5
=43.2