0.75*24+0.75/0.25的简便算法.

分类: 作业答案 • 2022-06-23 12:05:41

问题描述：

答

0.75*24+0.75/0.25=0.75【24+1/（1/4）】=0.75（24+4）=0.75*4*7=3*7=21

答

0.75*24+0.75/0.25
=0.75*24+0.75*4
=0.75*(24+4)
=0.75*28
=0.25*3*4*7
=3*7*(0.25*4)
=21

答

=0.75*4*6+0.75/0.25=3*6+3=21