问题 填空题
化简下面各比3.6:2.4=______;1.2米:5分米=______;
2
9
5
12
=______;
3
8
:0.75=______.
答案

(1)3.6:2.4,

=(3.6×10):(2.4×10),

=36:24,

=(36÷12):(24÷12),

=3:2;

(2)1.2米:5分米,

=12分米:5分米,

=12:5;

(3)

2
9
5
12

=(

2
9
×36):(
5
12
×36),

=8:15;

(4)

3
8
:0.75,

=

3
8
3
4

=(

3
8
×
8
3
):(
3
4
×
8
3
),

=1:2.

故答案为:3:2,12:5,8:15,1:2.

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