题目内容
把下面每组中的分数先通分,然后按从小到大的顺序排列.
和
2
、2
和1
.
| 13 |
| 15 |
| 8 |
| 9 |
2
| 1 |
| 3 |
| 4 |
| 9 |
| 5 |
| 12 |
(1)因为
=
,
=
,
且
<
,
所以
<
;
(2)因为2
=
=
,2
=
=
,1
=
=
,
且
<
<
,
所以1
<2
<2
.
| 13 |
| 15 |
| 39 |
| 45 |
| 8 |
| 9 |
| 40 |
| 45 |
且
| 39 |
| 45 |
| 40 |
| 45 |
所以
| 13 |
| 15 |
| 8 |
| 9 |
(2)因为2
| 1 |
| 3 |
| 7 |
| 3 |
| 84 |
| 36 |
| 4 |
| 9 |
| 22 |
| 9 |
| 88 |
| 36 |
| 5 |
| 12 |
| 17 |
| 12 |
| 51 |
| 36 |
且
| 51 |
| 36 |
| 84 |
| 36 |
| 88 |
| 36 |
所以1
| 5 |
| 12 |
| 1 |
| 3 |
| 4 |
| 9 |
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