问题 解答题
先化简,再求比值
1
3
4
:0.85
2
1
2
:0.04.
答案

(1)1

3
4
:0.85,

=(

7
4
×20):(
17
20
×20),

=35:17;

1

3
4
:0.85,

=35:17,

=35÷17,

=

35
17

(2)2

1
2
:0.04,

=(2.5×100):(0.04×100),

=250:4,

=125:2;

2

1
2
:0.04,

=125:2,

=62.5.

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