问题 选择题
下列各式中正确的是(  )
A.|-0.1|<|-0.01|B.|-
1
3
|<
1
5
C.
2
3
<|-
4
5
|
D.|-
1
9
|>+
1
2
答案

A、错误,∵|-0.1|=0.1,|-0.01|=0.01,0.1>0.01,

∴|-0.1|>|-0.01|;

B、错误,∵|-

1
3
|=
1
3
=
5
15
1
5
=
3
15
5
15
3
15

∴|-

1
3
|>
1
5

C、正确,|-

4
5
|=
12
15
2
3
=
10
15
,∴|-
4
5
|>
2
3

D、错误,∵|-

1
9
|=
2
18
1
2
=
2
18
,∴|-
1
9
|<+
1
2

故选C.

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