题目内容
在横线里填上“>”“<”或“=”.
4
4
.
| 1 |
| 6 |
| 2 |
| 7 |
| 3 |
| 4 |
| 5 |
| 7 |
| 7 |
| 9 |
| 21 |
| 27 |
4
| 1 |
| 3 |
| 1 |
| 5 |
考点:分数大小的比较
专题:分数和百分数
分析:先通分,再根据同分母分数大小比较的方法进行比较.据此解答.
解答:
解:(1)
=
,
=
,
<
,所以
<
,
(2)
=
,
=
,
>
,所以
>
,
(3)
=
,
=
,所以
=
,
(4)4
=
=
,4
=
=
,
>
,所以4
>4
.
故答案为:<,>,=,>.
| 1 |
| 6 |
| 7 |
| 42 |
| 2 |
| 7 |
| 12 |
| 42 |
| 7 |
| 42 |
| 12 |
| 42 |
| 1 |
| 6 |
| 2 |
| 7 |
(2)
| 3 |
| 4 |
| 21 |
| 28 |
| 5 |
| 7 |
| 20 |
| 28 |
| 21 |
| 28 |
| 20 |
| 28 |
| 3 |
| 4 |
| 5 |
| 7 |
(3)
| 7 |
| 9 |
| 21 |
| 27 |
| 21 |
| 27 |
| 21 |
| 27 |
| 7 |
| 9 |
| 21 |
| 27 |
(4)4
| 1 |
| 3 |
| 13 |
| 3 |
| 65 |
| 15 |
| 1 |
| 5 |
| 21 |
| 5 |
| 63 |
| 15 |
| 65 |
| 15 |
| 63 |
| 15 |
| 1 |
| 3 |
| 1 |
| 5 |
故答案为:<,>,=,>.
点评:本题的关键是先通分,再比较大小.
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