3.5X0.8+5.5X80%+5分之4

问题描述:

3.5X0.8+5.5X80%+5分之4
能简算的要简算~

原式=3.5*0.8+5.5*0.8+0.8
=(3.5+5.5+1)*0.8
=10*0.8
=8
望采纳,谢谢