题目内容
比较下列各组数大小:
(1)
______12;(2)
______0.5;(3)π______3.14;(4)
______3
.
(1)
| 140 |
| ||
| 2 |
| 2 |
| 2 |
(1)∵12=
,140<144,
∴
<12;
(2)∵0.5=
,
-1>1,
∴
>0.5;
(3)∵π=3.1415…,
∴π>3.14;
(4)∵3
=
,
<
,
∴
<3
.
故填空答案:(1)<(2)>(3)>(4)<.
| 144 |
∴
| 140 |
(2)∵0.5=
| 1 |
| 2 |
| 5 |
∴
| ||
| 2 |
(3)∵π=3.1415…,
∴π>3.14;
(4)∵3
| 2 |
| 18 |
| 2 |
| 18 |
∴
| 2 |
| 2 |
故填空答案:(1)<(2)>(3)>(4)<.
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