下列比较大小正确的是()A.-(-3)<+(-3)B.-45<-15C.-|-12|>11D.-|-23|=-(-23)-数学

题目简介

下列比较大小正确的是()A.-(-3)<+(-3)B.-45<-15C.-|-12|>11D.-|-23|=-(-23)-数学

题目详情

下列比较大小正确的是(  )
A.-(-3)<+(-3)B.-
4
5
<-
1
5
C.-|-12|>11D.-|-
2
3
|=-(-
2
3
)
题型:单选题难度:偏易来源:不详

答案

A、∵-(-3)=3>0,+(-3)=-3<0,∴-(-3)>+(-3),故本选项错误;
B、∵-class="stub"4
5
<0,-class="stub"1
5
<0,|-class="stub"4
5
|=class="stub"4
5
>|-class="stub"1
5
|=class="stub"1
5
,∴-class="stub"4
5
<-class="stub"1
5
,故本选项正确;
C、∵-|-12|=-12<0,11>0,∴-|-12|>11,故本选项错误;
D、∵-|-class="stub"2
3
|=-class="stub"2
3
<0,-(-class="stub"2
3
)=class="stub"2
3
>0,∴-|-class="stub"2
3
|<-(-class="stub"2
3
),故本选项错误.
故选B.

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