题目内容
| 把下列各比写成分数形式 9:8= |
|
| ||||||
| 12:0.8= |
|
| ||||||
|
0.45:
|
1.5:1.2= | ||||||
| 50:0.5= |
4:20= |
7:0.01= |
分析:根据比与分数的关系,比的前项相当于分数的分子,比号相当于分数线,比的后项相当于分数的分数的分母,化成分数后再根据分数的基本性质,把分数化简即可.
解答:解:9:8=
,
:0.75=0.625:0.75=
=
,
:
=
÷
=
×
=
,
12:0.8=
=
=
,
:1.5=0.375:1.5=
=
=
,
:1=
÷1=
,
:
=
÷
=
×
=
,
0.45:
=0.45:0.75=
=
=
,
1.5:1.2=
=
=
,
50:0.5=
=
=
,
4:20=
=
,
7:0.01=
=
.
故答案为:
,
,
,
,
,
,
,
,
,
,
,
.
| 8 |
| 9 |
| 5 |
| 8 |
| 625 |
| 750 |
| 5 |
| 6 |
| 3 |
| 8 |
| 2 |
| 9 |
| 3 |
| 8 |
| 2 |
| 9 |
| 3 |
| 8 |
| 9 |
| 2 |
| 27 |
| 16 |
12:0.8=
| 12 |
| 0.8 |
| 120 |
| 8 |
| 15 |
| 1 |
| 3 |
| 8 |
| 0.375 |
| 1.5 |
| 375 |
| 1500 |
| 1 |
| 4 |
| 9 |
| 111 |
| 9 |
| 111 |
| 9 |
| 111 |
| 1 |
| 5 |
| 5 |
| 8 |
| 1 |
| 5 |
| 5 |
| 8 |
| 1 |
| 5 |
| 8 |
| 5 |
| 8 |
| 25 |
0.45:
| 3 |
| 4 |
| 0.45 |
| 0.75 |
| 45 |
| 75 |
| 3 |
| 5 |
1.5:1.2=
| 1.5 |
| 1.2 |
| 15 |
| 12 |
| 5 |
| 4 |
50:0.5=
| 50 |
| 0.5 |
| 500 |
| 5 |
| 100 |
| 1 |
4:20=
| 4 |
| 20 |
| 1 |
| 5 |
7:0.01=
| 7 |
| 0.01 |
| 700 |
| 1 |
故答案为:
| 8 |
| 9 |
| 5 |
| 6 |
| 27 |
| 16 |
| 15 |
| 1 |
| 1 |
| 4 |
| 9 |
| 111 |
| 8 |
| 25 |
| 3 |
| 5 |
| 5 |
| 4 |
| 100 |
| 1 |
| 1 |
| 5 |
| 700 |
| 1 |
点评:本题主要是考查比与分数之间的关系,属于基础知识,要掌握.
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