问题 解答题
化简比
15:24  
1
2
吨:750千克 
3
4
2
5

0.l3:3.9.
答案

(1)15:24,

=(15÷3):(24÷3),

=5:8,

(2)

1
2
吨:750千克,

=500千克:700千克,

=(500÷100):(700÷100),

=5:7,

(3)

3
4
2
5

=(

3
4
×20):(
2
5
×20),

=15:8,

(4)0.l3:3.9,

=(0.13÷0.13):(3.9÷0.13),

=1:30.

单项选择题
单项选择题