题目内容
求比值.
14
:0.72
:1
3
:2
.
14
| 2 |
| 5 |
| 4 |
| 7 |
| 1 |
| 7 |
3
| 1 |
| 2 |
| 1 |
| 3 |
分析:解答本题时,要根据比的意义,用比的前项除以比的后项,即可求出比值.
解答:解:14
:0.72
=14
÷0.72
=14.4÷0.72
=20;
:1
=
÷1
=
;
3
:2
=3
÷2
=
÷
=
.
| 2 |
| 5 |
=14
| 2 |
| 5 |
=14.4÷0.72
=20;
| 4 |
| 7 |
| 1 |
| 7 |
=
| 4 |
| 7 |
| 1 |
| 7 |
=
| 1 |
| 2 |
3
| 1 |
| 2 |
| 1 |
| 3 |
=3
| 1 |
| 2 |
| 1 |
| 3 |
=
| 7 |
| 2 |
| 7 |
| 3 |
=
| 3 |
| 2 |
点评:比值如果用分数表示,最后要化成最简分数;求比值和化简比的方法也要分清.
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