8又4分之25-3.875-2又8分之1-1.16

问题描述:

8又4分之25-3.875-2又8分之1-1.16

8+25/4-3.875-2-1/8-1.16
=8+6.25-3.875-2-0.125-1.16
=8-2-(3.875+0.125)+6.25-1.16
=6-4+6.25-1.16
=7.09