问题
填空题
比较大小: (1)0.026______0,(2)-7.5______-7,(3)-
|
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)∵-
=-2 3
,-8 12
=-3 4
,|-9 12
|=8 12
<|-8 12
|=9 12
,9 12
∴-
>-8 12
,即-9 12
>-2 3
;3 4
(4)∵|-5|=5,-(-5)=5,
∴|-5|=-(-5).
故答案为:>,<,>,=.