12.5-3.25*1.8简便算法_其他解答

12.5-3.25*1.8简便算法

人气：468 ℃　时间：2020-04-13 07:37:24

解答

12.5-3.25*1.8
=12.5-12.5*0.26*1.8
=12.5(1-0.468)
=12.5*0.532
=12.5*8*0.0665
=100*0.0665
=6.65