0点175除以0点25乘4,零点一二五乘8点8除以0点22简便运算

分类: 作业答案 • 2021-12-24 15:16:17

问题描述：

答

0.175亠0.25x4
=7/40亠1/4x4
=7/40x4x4
=28/10
=2.8
0.125x8.8亠0.22=
0.125x(8+0.8)亠0.22
=1+0.1亠22/100
=1+1/10x100/22
=1+10/22
=32/22
=16/11请你写在纸上