9.8*3.6怎么简算
问题描述:
9.8*3.6怎么简算
9.8*3.6和7.5*1.9*0.4怎么简算???
答
9.8*3.6
=(10-0.2)×3.6
=36-0.72
=35.28那7.5*1.9*0.4呢?7.5*1.9*0.4=7.5×0.4×1.9=3×(2-0.1)=6-0.3=5.7