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
问题描述：
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
0.85*101-0.85
=0.85 (101-1)
=0.85*100
=85
3.6/4-0.12*5
=1.2*3/4-1.2*0.5
=1.2*(0.75-0.5)
=1.2*0.25
=0.3
(3.95-3.68)/9
=0.27/9=0.03
4.8*5-6.6
=48*0.5-6.6
=24-6.6
=17.4
答
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