简算7.4*9.8—14.5
问题描述:
简算7.4*9.8—14.5
答
7.4X9.8-14.5=(7.4X10-7.4X0.2)-14.5=(74-1.48)-14.5=72.52-14.5=58.02
简算7.4*9.8—14.5
7.4X9.8-14.5=(7.4X10-7.4X0.2)-14.5=(74-1.48)-14.5=72.52-14.5=58.02