题目内容
估算比较大小:
(1)-
______-3.2;
(2)
______5;
(3)
______
;
(4)
______
(填“>”或“<”).
(1)-
| 10 |
(2)
| 3 | 130 |
(3)
| ||
| 2 |
| ||
| 2 |
(4)
| ||
| 2 |
| 1 |
| 2 |
(1)∵-3.2=-
,10<1024,
∴-
>-
;
(2)∵5=
,130>125,
∴
>5;
(3)∵
-1<
+1,
∴
<
;
(4)∵
-1<1,
∴
<
.
故填空答案:(1)>(2)>(3)<(4)<.
| 10.24 |
| 10.24 |
| 10.24 |
∴-
| 10 |
| 10.24 |
(2)∵5=
| 3 | 125 |
∴
| 3 | 130 |
(3)∵
| 6 |
| 2 |
∴
| ||
| 2 |
| ||
| 2 |
(4)∵
| 3 |
∴
| ||
| 2 |
| 1 |
| 2 |
故填空答案:(1)>(2)>(3)<(4)<.
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