比较下列各组数大小:(1)140 12,(2)5-12 0.5,2 32.
比较下列各组数大小:
(1)
______12;(2)
______0.5;(3)π______3.14;(4)
______3
.在线课程(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)<.
(1)
140 |
| ||
2 |
2 |
2 |
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)<.