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

(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.

选择题
报关编码