题目内容
求比值:
(1)27:45
(2)
:
(3)
:2
(4)
:0.22
(5)3.5:1.2
(6)0.5:8.
(1)27:45
(2)
| 1 |
| 2 |
| 5 |
| 3 |
(3)
| 2 |
| 9 |
(4)
| 11 |
| 8 |
(5)3.5:1.2
(6)0.5:8.
考点:求比值和化简比
专题:比和比例
分析:用比的前项除以后项解答即可.
解答:
解:(1)27:45
=27÷45
=
;
(2)
:
=
÷
=
;
(3)
:2
=
÷2
=
;
(4)
:0.22
=
÷0.22
=6.25;
(5)3.5:1.2
=3.5÷1.2
=
;
(6)0.5:8
=0.5÷8
=0.0625.
=27÷45
=
| 3 |
| 5 |
(2)
| 1 |
| 2 |
| 5 |
| 3 |
=
| 1 |
| 2 |
| 5 |
| 3 |
=
| 3 |
| 10 |
(3)
| 2 |
| 9 |
=
| 2 |
| 9 |
=
| 1 |
| 9 |
(4)
| 11 |
| 8 |
=
| 11 |
| 8 |
=6.25;
(5)3.5:1.2
=3.5÷1.2
=
| 35 |
| 12 |
(6)0.5:8
=0.5÷8
=0.0625.
点评:求比值的结果是一个商,可以是整数、小数或分数.
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