题目内容
比较大小.
(1)-
______-
;
(2)-0.25______-2.5;
(3)-
______-|+
|;
(4)-(-
)______|+
|.
(1)-
3 |
5 |
5 |
3 |
(2)-0.25______-2.5;
(3)-
2 |
3 |
2 |
3 |
(4)-(-
2 |
3 |
2 |
3 |
(1)∵-
=-
,-
=-
,
∴-
>-
;
(2)-0.25>-2.5;
(3)-
=-|+
|;
(4)∵-(-
)=
,|+
|=
,
∴-(-
)=|+
|.
故答案为:>;>;=;=.
3 |
5 |
9 |
15 |
5 |
3 |
25 |
15 |
∴-
3 |
5 |
5 |
3 |
(2)-0.25>-2.5;
(3)-
2 |
3 |
2 |
3 |
(4)∵-(-
2 |
3 |
2 |
3 |
2 |
3 |
2 |
3 |
∴-(-
2 |
3 |
2 |
3 |
故答案为:>;>;=;=.
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