5.48-(6.6-2.35)-0.25

问题描述:

5.48-(6.6-2.35)-0.25
简便

5.48-(6.6-2.35)-0.25
=5.48-6.6+(2.35-1.25)
=5.48+2.1-6.6
=7.58-6.6
=7.6-6.6-0.02
=1-0.02
=0.98