问题 解答题
求比值
49:28
3
7
5
21

102
68

4.5:0.45.
答案

(1)49:28,

=49÷28,

=

49
28

=

7
4

(2)

3
7
5
21

=

3
7
÷
5
21

=

3
7
×
21
5

=

9
5

(3)

102
68

=102÷68,

=1.5;

(4)4.5:0.45,

=4.5÷0.45

=10.

选择题
问答题 简答题