3.75x6.4x7.5
问题描述:
3.75x6.4x7.5
答
3.75x6.4x7.5
=3.75x0.8x8x7.5
=3x60
=180好像没巧算吧 只是拆开而已3.75x6.4x7.5 =3.75x0.8x8x7.5=30/8x0.8x8x40/3=3x60=180哪来的30和400.375=3/83.75=30/80.75=3/47.5=30/4为什么是3除8,不是别的这是常识,要记住的,你这么问就向5*5为什么等于25一样我无法回答了