问题 解答题
8:12
0.25:0.45
1
6
2
5

2
3
:0.75.
答案

8:12=8÷12=

8
12
=
2
3

0.25:0.45=

25
100
45
100
=
25
100
÷
45
100
=
25
100
×
100
45
=
25
45
=
5
9

1
6
2
5
=
1
6
÷
2
5
=
1
6
×
5
2
=
5
12

2
3
:0.75=
2
3
75
100
=
2
3
3
4
=
2
3
÷
3
4
=
2
3
×
4
3
=
8
9

单项选择题 A1/A2型题
判断题