化简下面各比3.6:2.4=______;1.2米:5分米=______;29:512=______;38:0.75=______.-数学

题目简介

化简下面各比3.6:2.4=______;1.2米:5分米=______;29:512=______;38:0.75=______.-数学

题目详情

化简下面各比3.6:2.4=______;1.2米:5分米=______;
2
9
5
12
=______;
3
8
:0.75=______.
题型:填空题难度:中档来源:不详

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)class="stub"2
9
class="stub"5
12

=(class="stub"2
9
×36):(class="stub"5
12
×36),
=8:15;

(4)class="stub"3
8
:0.75,
=class="stub"3
8
class="stub"3
4

=(class="stub"3
8
×class="stub"8
3
):(class="stub"3
4
×class="stub"8
3
),
=1:2.
故答案为:3:2,12:5,8:15,1:2.

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