题目内容

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