题目内容
把分数
,
,
,
按从大到小的顺序排列起来
>
>
>
>
>
>
.
| 21 |
| 43 |
| 12 |
| 23 |
| 21 |
| 53 |
| 13 |
| 23 |
| 13 |
| 23 |
| 12 |
| 23 |
| 21 |
| 43 |
| 21 |
| 53 |
| 13 |
| 23 |
| 12 |
| 23 |
| 21 |
| 43 |
| 21 |
| 53 |
分析:根据分数的意义可知,
>
,
>
,又
>
,
<
,即
>
.所以
>
>
>
.
| 21 |
| 43 |
| 21 |
| 53 |
| 13 |
| 23 |
| 12 |
| 23 |
| 12 |
| 23 |
| 1 |
| 2 |
| 21 |
| 43 |
| 1 |
| 2 |
| 12 |
| 23 |
| 21 |
| 43 |
| 13 |
| 23 |
| 12 |
| 23 |
| 21 |
| 43 |
| 21 |
| 53 |
解答:解:由于
>
,
>
,
又
>
,
<
,即
>
;
所以
>
>
>
.
故答案为:
>
>
>
.
| 21 |
| 43 |
| 21 |
| 53 |
| 13 |
| 23 |
| 12 |
| 23 |
又
| 12 |
| 23 |
| 1 |
| 2 |
| 21 |
| 43 |
| 1 |
| 2 |
| 12 |
| 23 |
| 21 |
| 43 |
所以
| 13 |
| 23 |
| 12 |
| 23 |
| 21 |
| 43 |
| 21 |
| 53 |
故答案为:
| 13 |
| 23 |
| 12 |
| 23 |
| 21 |
| 43 |
| 21 |
| 53 |
点评:分母相同,分子越大,分数值就越大;分子相同,分母越小,分数值就越大.
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