题目内容
在横线里填上“>”“∠”或“=”.
< <
|
= = 3
| ||||||||
> >
|
< <
| ||||||||
> > 0.3 |
0.45 > >
| ||||||||
< < 0.68 |
0.07 = =
|
分析:同分母分数相比较,分子越大,分数值就越大;分子相同的分数,分母越小分数值就越大;分子、分母都不同时,可能过通分化成同分母的分数相比较;小数与分数相比较时,可先将它们化为统一的数据形式后再进行比较.
3
=
,
=
,
=
,则
>
;
=
,0.3=
=
=
,则
>0.3;
0.45=
=
,
=
,则0.45>
;
0.68=
=
,
=
,则
<0.68;
0.07=
.
3
| 1 |
| 5 |
| 16 |
| 5 |
| 2 |
| 3 |
| 4 |
| 6 |
| 1 |
| 2 |
| 3 |
| 6 |
| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 3 |
| 10 |
| 30 |
| 3 |
| 10 |
| 9 |
| 30 |
| 9 |
| 30 |
| 1 |
| 3 |
0.45=
| 9 |
| 20 |
| 81 |
| 180 |
| 4 |
| 9 |
| 10 |
| 180 |
| 4 |
| 9 |
0.68=
| 17 |
| 25 |
| 51 |
| 75 |
| 2 |
| 3 |
| 50 |
| 75 |
| 2 |
| 3 |
0.07=
| 7 |
| 100 |
解答:解:
故答案为:<,=,>,<,>,>,<,=.
|
| ||||||||
|
| ||||||||
|
0.45>
| ||||||||
|
0.07=
|
点评:在比较异分母分数时要细心,注意通分.
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