问题 解答题
化简比.
4.2:0.350.35:
7
3
1
4
2
5
答案

4.2:0.35,

=(4.2×100):(0.35×100),

=420:35,

=(420÷35):(35÷35),

=12:1;

0.35:

7
3

=(0.35×3):(

7
3
×3),

=1.05:7,

=(1.05×100):(7×100),

=105:700,

=(105÷35):(700÷35),

=3:20;

1
4
2
5

=(

1
4
×20):(
2
5
×20),

=5:8.

问答题 简答题
单项选择题