8.6*2.7+8.6*5.5+1.4*8.2简便算法_数学解答

8.6*2.7+8.6*5.5+1.4*8.2简便算法

人气：393 ℃　时间：2020-05-05 02:48:26

解答

8.6×2.7+8.6×5.5+1.4×8.2
=8.6×(2.7+5.5)+1.4×8.2
=8.6×8.2+1.4×8.2
=(8.6+1.4)×8.2
=10×8.2
=822.12/0.25简算2.12/0.25=(2.12×4)/(0.25×4)=8.48/1=8.48