①4.56+5.44×0.2 按顺序 ②0.75×12.5 用简便计算

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/29 13:26:31
①4.56+5.44×0.2 按顺序 ②0.75×12.5 用简便计算
x){4qzF z:_.tW£ MO743Ux>eu Onum)Э_`gC]ۍbp034@(6@$5 ,t L5E bfFP9{9ϧM|9}Ov/}>s]<274$A}j((($Xh曂( @m-Abт>XXؚꙙXP@tiikmoakH#U#y

①4.56+5.44×0.2 按顺序 ②0.75×12.5 用简便计算
①4.56+5.44×0.2 按顺序 ②0.75×12.5 用简便计算

①4.56+5.44×0.2 按顺序 ②0.75×12.5 用简便计算
①4.56+5.44×2
=4.56+5.44+5.44
=10+5.44
=15.44
②0.75×12.5
=(0.8-0.05)×12.5
=10-0.625
=9.375
若有疑问可以百度Hi、

0 `8*125-o5*125=10- o625=9375

4.56+5.44×0.2 =4.56+1.088=5.648
0.75×12.5 =3/4×(12+1/2)=9+3/8=9又3/8