问题 解答题
化简.
68
102
=
1:0.75=
1
3
4
5
=
答案

(1)

68
102
=
68÷34
102÷34
=
2
3

(2)1:0.75

=1:

3
5

=(1×5):(

3
5
×5)

=5:3;

(3)

1
3
4
5

=(

1
3
×
5
4
):(
4
5
×
5
4

=

5
12
:1

=5:12.

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