比较大小:(1)0.026______0,(2)-7.5______-7,(3)-23______-34,(4)|-5|______-(-5).-数学

题目简介

比较大小:(1)0.026______0,(2)-7.5______-7,(3)-23______-34,(4)|-5|______-(-5).-数学

题目详情

比较大小:
(1)0.026______0,(2)-7.5______-7,(3)-
2
3
______-
3
4
,(4)|-5|______-(-5).
题型:填空题难度:中档来源:不详

答案

(1)∵0.026是正数,
∴0.026>0;

(2)∵|-7.5|=7.5,|-7|=7,7.5>7,
∴-7.5<-7;

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

∴-class="stub"8
12
>-class="stub"9
12
,即-class="stub"2
3
>-class="stub"3
4


(4)∵|-5|=5,-(-5)=5,
∴|-5|=-(-5).
故答案为:>,<,>,=.

更多内容推荐