比较大小:-23______-34,-(-2)______-|-3|;-[-(+14)]______-[+(-14)].-数学

题目简介

比较大小:-23______-34,-(-2)______-|-3|;-[-(+14)]______-[+(-14)].-数学

题目详情

比较大小:
-
2
3
______-
3
4

-(-2)______-|-3|;
-[-(+
1
4
)]______-[+(-
1
4
)].
题型:填空题难度:中档来源:不详

答案

∵|-class="stub"2
3
|=class="stub"2
3
=class="stub"8
12
,|-class="stub"3
4
|=class="stub"3
4
=class="stub"9
12

∴-class="stub"2
3
>-class="stub"3
4

∵-(-2)=2,-|-3|=-3,
∴-(-2)>-|-3|;
∵-[-(+class="stub"1
4
)]=class="stub"1
4
,-[+(-class="stub"1
4
)]=class="stub"1
4

∴-[-(+class="stub"1
4
)]=-[+(-class="stub"1
4
)].
故答案为>、>、=.

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