简便:(1)18÷0.75×0.75 (2)12.5×0.7×0.8 (3)0.25×4.35-0.25×0.35 = = = = = = = = =

问题描述:

简便:(1)18÷0.75×0.75 (2)12.5×0.7×0.8 (3)0.25×4.35-0.25×0.35 = = = = = = = = =

原式=18
原式=12.5×0.8×0.7=10×0.7=7
原式=0.25×(4.35-0.35)=0.25×4=1