23.3*(2-0.75)+56*0.25+(1+0.25)*28.7的简便运算_数学解答

23.3*(2-0.75)+56*0.25+(1+0.25)*28.7的简便运算

人气：248 ℃　时间：2019-08-18 11:54:13

解答

=23.3*1.25+56*0.25+1.25*28.7
=（23.3+28.7）*0.25*5+56*0.25
=52*5*0.25+56*0.25
=13*5*4*0.25+14*4*0.25
=65+14
=79