8.453/4+2.550.75-3/4简算

分类: 作业答案 • 2021-12-28 14:55:16

问题描述：

8.45*3/4+2.55*0.75-3/4简算

答

8.45*3/4+2.55*0.75-3/4
=8.45*0.75+2.55*0.75-1*0.75
=0.75*(8.45+2.55-1)
=0.75*10
=7.5

8.45*3/4+2.55*0.75-3/4简算