问题 解答题
求比值.
0.14:8.4
0.8:1.5
8
35
6
21
1
4
时:20分
答案

(1)0.14:8.4,

=0.14÷8.4,

=

14
840

=

1
60

(2)0.8:1.5,

=0.8÷1.5,

=

8
15

(3)

8
35
6
21

=

8
35
÷
6
21

=

4
5

(4)

1
4
时:20分,

=15分:20分,

=15:20,

=15÷20,

=

3
4

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