化简比. (1)12:16 (2)3/4:11/8 (3)4.5:2.7 (4)6/10:0.1

问题描述:

化简比.
(1)12:16
(2)
3
4
:1
1
8
(3)4.5:2.7 (4)
6
10
:0.1

(1)12:16,
=(12÷4):(16÷4),
=3:4;
(2)

3
4
:1
1
8

=(
3
4
×8):(
9
8
×8),
=6:9,
=2:3;
(3)4.5:2.7,
=(4.5×10÷9):(2.7×10÷9),
=5:3;
(4)
6
10
:0.1,
=0.6:0.1,
=(0.6×10):(0.1×10),
=6:1.