下面各题怎样算简便就怎样算

题目

下面各题怎样算简便就怎样算
0.85*101-0.85 3.6/4-0.12*5 (3.95-3.68)/9 4.8*5-6.6

答案

0.85*101-0.85
=0.85*(101-1)
=0.85*100
=85
3.6/4-0.12*5
=0.9-0.6
=0.3
(3.95-3.68)/9
=0.27/9
=0.03
4.8*5-6.6
=4.8*10/2-6.6
=48/2-6.6
=24-6.6
=17.4