登录
1. 把下列各比化为最简整数比：
(1) $12:24:32$； (2) $1\frac{1}{8}:2\frac{1}{4}:1\frac{1}{2}$；
(3) $81g:0.36kg:4\frac{1}{2}kg$； (4) $180cm:1\frac{1}{5}m:9.6dm$.
(1) $12:24:32$； (2) $1\frac{1}{8}:2\frac{1}{4}:1\frac{1}{2}$；
(3) $81g:0.36kg:4\frac{1}{2}kg$； (4) $180cm:1\frac{1}{5}m:9.6dm$.
答案
1. (1) 3:6:8. (2) 3:6:4. (3) 9:40:500. (4) 15:10:8.
2. 根据下列已知条件，求 $a:b:c$：
(1) $a:b = 2:3$，$b:c = 3:5$； (2) $a:b = 3:5$，$b:c = 6:7$；
(3) $a:b = 3:4$，$b:c=\frac{1}{4}:\frac{1}{3}$； (4) $a:b = 2:5$，$a:c = 5:8$.
(1) $a:b = 2:3$，$b:c = 3:5$； (2) $a:b = 3:5$，$b:c = 6:7$；
(3) $a:b = 3:4$，$b:c=\frac{1}{4}:\frac{1}{3}$； (4) $a:b = 2:5$，$a:c = 5:8$.
答案
2. (1) 2:3:5. (2) 18:30:35. (3) 9:12:16. (4) 10:25:16.
