320x(1.25+2.5+0.5)巧算

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/05 14:34:06
320x(1.25+2.5+0.5)巧算
x)3620326363|}umqKِ,l   ) FȚhCh#0mo410жbC31_\gre9

320x(1.25+2.5+0.5)巧算
320x(1.25+2.5+0.5)巧算

320x(1.25+2.5+0.5)巧算
320x(1.25+2.5+0.5)
=320x1.25+320x2.5+320x0.5
=320x5/4+320x5/2+320x1/2
=400+800+160
=1360