化成最简整数比今晚就要!(1)121:66求比值(1)1.25:5/8 (2)20.8:1.8 (3)32/5:1/6 (4)7/12:3/8
问题描述:
化成最简整数比
今晚就要!(1)121:66
求比值
(1)1.25:5/8 (2)20.8:1.8 (3)32/5:1/6 (4)7/12:3/8
答
(1)121:66 =11:6
(1)1.25:5/8=2:1
(2)20.8:1.8 =104:9
(3)32/5:1/6 =192:5
(4)7/12:3/8=14:9
答
11:6 (1)2:1 (2)104:9 (3)192:5 (4)14:9
答
121:66=11*11:11*6=11:6
1.25:5/8=1.25*8:5/8*8=10:5=2*5:5*1=2:1
20.8:1.8=208:18=104*2:9*2=104:9
32/5:1/6=30*32/5:30*1/6=192:5
7/12:3/8=24*7/12:24*3/8=14:9
答
11/6
2
104/9
192/5
14/9