0.25*0.7 1.16的简便计算应怎么做_数学解答

0.25*0.7 1.16的简便计算应怎么做

人气：228 ℃　时间：2020-05-08 21:51:35

解答

=0.25*0.7*1.16
=0.25*0.7*0.29*4
=(0.25*4)*0.7*(0.3-0.01)
=0.7*0.3-0.7*0.01
=0.21-0.007
=0.203