题目内容
| 求比值: ①12:8 | ②0.4:0.12 | ③5:
| ||||||||
| ④4.5:0.9 | ⑤
| ⑥
| ||||||||
⑦0.75:
| ⑧4:
|
①12:8,
=12÷8,
=1.5;
②0.4:0.12,
=0.4÷0.12,
=
;
③5:
,
=5÷
,
=20;
④4.5:0.9,
=4.5÷0.9,
=5;
⑤
:
,
=
÷
,
=
;
⑥
:
,
=
÷
,
=0.6;
⑦0.75:
,
=0.75÷
,
=3;
⑧4:
,
=4÷
,
=16.
=12÷8,
=1.5;
②0.4:0.12,
=0.4÷0.12,
=
| 10 |
| 3 |
③5:
| 1 |
| 4 |
=5÷
| 1 |
| 4 |
=20;
④4.5:0.9,
=4.5÷0.9,
=5;
⑤
| 1 |
| 3 |
| 5 |
| 6 |
=
| 1 |
| 3 |
| 5 |
| 6 |
=
| 2 |
| 5 |
⑥
| 2 |
| 3 |
| 10 |
| 9 |
=
| 2 |
| 3 |
| 10 |
| 9 |
=0.6;
⑦0.75:
| 1 |
| 4 |
=0.75÷
| 1 |
| 4 |
=3;
⑧4:
| 1 |
| 4 |
=4÷
| 1 |
| 4 |
=16.
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