题目内容
通分并比较分数的大小
①
和
②
、
和
③
和
④
、
和
.
①
| 6 |
| 7 |
| 8 |
| 9 |
| 3 |
| 5 |
| 5 |
| 8 |
| 7 |
| 12 |
| 20 |
| 21 |
| 14 |
| 15 |
| 3 |
| 4 |
| 1 |
| 2 |
| 5 |
| 8 |
①
=
,
=
,
因为
<
,所以
<
;
②
=
,
=
,
=
,
因为
>
>
,所以
>
>
;
③
=
,
=
,
因为
>
,所以
>
;
④
=
,
=
,
因为
>
>
,所以
>
>
.
| 6 |
| 7 |
| 54 |
| 63 |
| 8 |
| 9 |
| 56 |
| 63 |
因为
| 54 |
| 63 |
| 56 |
| 63 |
| 6 |
| 7 |
| 8 |
| 9 |
②
| 3 |
| 5 |
| 72 |
| 120 |
| 5 |
| 8 |
| 75 |
| 120 |
| 7 |
| 12 |
| 70 |
| 120 |
因为
| 75 |
| 120 |
| 72 |
| 120 |
| 70 |
| 120 |
| 5 |
| 8 |
| 3 |
| 5 |
| 7 |
| 12 |
③
| 20 |
| 21 |
| 100 |
| 105 |
| 14 |
| 15 |
| 98 |
| 105 |
因为
| 100 |
| 105 |
| 98 |
| 105 |
| 20 |
| 21 |
| 14 |
| 15 |
④
| 3 |
| 4 |
| 6 |
| 8 |
| 1 |
| 2 |
| 4 |
| 8 |
因为
| 6 |
| 8 |
| 5 |
| 8 |
| 4 |
| 8 |
| 3 |
| 4 |
| 5 |
| 8 |
| 1 |
| 2 |
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