比较大小:(23)2______(-34)2;-212______-12;-(-5)______|-5|;+(-23)______-(-25);|-0.1|______|0.01|;-24______

题目简介

比较大小:(23)2______(-34)2;-212______-12;-(-5)______|-5|;+(-23)______-(-25);|-0.1|______|0.01|;-24______

题目详情

比较大小:
2
3
2______(-
3
4
2; -2
1
2
______-
1
2
;-(-5)______|-5|;
+(-
2
3
)______-(-
2
5
);|-0.1|______|0.01|;-24______(-2)4
题型:填空题难度:中档来源:不详

答案

∵(class="stub"2
3
)2=class="stub"4
9
,(-class="stub"3
4
)2=class="stub"9
16
,∴(class="stub"2
3
)2<(-class="stub"3
4
)2;
∵|-2class="stub"1
2
|=2class="stub"1
2
,|-class="stub"1
2
|=class="stub"1
2
,∴-2class="stub"1
2
<-class="stub"1
2

∵-(-5)=5,|-5|=5,∴-(-5)=|-5|;
∵+(-class="stub"2
3
)=-class="stub"2
3
,-(-class="stub"2
5
)=class="stub"2
5
,∴+(-class="stub"2
3
)<-(-class="stub"2
5
);
∵|-0.1|=0.1,|0.01|=0.01,∴|-0.1|>|0.01|;
∵-24=-16,(-2)4=16,∴-24<(-2)4.
故答案为<,<,=,<,>,<.

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