题目内容
在横线里填上“>”“<”或“=”.
×
;
×
;
×1
;
×
×
;
×
×
;
×
×
.
| 1 |
| 3 |
| 1 |
| 3 |
<
<
| 2 |
| 3 |
| 3 |
| 8 |
>
>
| 3 |
| 8 |
| 2 |
| 3 |
| 2 |
| 9 |
=
=
| 2 |
| 9 |
| 3 |
| 8 |
| 4 |
| 9 |
<
<
| 4 |
| 9 |
| 5 |
| 8 |
| 5 |
| 8 |
| 1 |
| 2 |
>
>
| 3 |
| 8 |
| 1 |
| 5 |
| 1 |
| 4 |
| 1 |
| 4 |
>
>
| 1 |
| 10 |
| 1 |
| 8 |
分析:(1)(5)(6)先计算,再进行分数大小的比较;
(2)(3)(4)根据积与因数的关系进行分数大小的比较.
(2)(3)(4)根据积与因数的关系进行分数大小的比较.
解答:解:(1)
×
=
<
;
(2)
>
×
;
(3)
×1=
;
(4)
×
<
×
;
(5)
×
=
>
×
=
;
(6)
×
=
>
×
=
.
故答案为:<;>;=;<;>;>.
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 9 |
| 2 |
| 3 |
(2)
| 3 |
| 8 |
| 3 |
| 8 |
| 2 |
| 3 |
(3)
| 2 |
| 9 |
| 2 |
| 9 |
(4)
| 3 |
| 8 |
| 4 |
| 9 |
| 4 |
| 9 |
| 5 |
| 8 |
(5)
| 5 |
| 8 |
| 1 |
| 2 |
| 5 |
| 16 |
| 3 |
| 8 |
| 1 |
| 5 |
| 3 |
| 40 |
(6)
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 16 |
| 1 |
| 10 |
| 1 |
| 8 |
| 1 |
| 80 |
故答案为:<;>;=;<;>;>.
点评:考查了分数乘法,分数大小的比较,积与因数的关系:一个非0因数乘以一个小于1的数,积小于原数;一个非0因数乘以一个等于1的数,积等于原数;一个非0因数乘以一个大于1的数,积大于原数.
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