题目内容
化简下面各比.
| (1)12:144 | (2)
|
(3)3.6:7.2 | (4)
|
(1)12:144
=(12÷12):(144÷12)
=1:12;
(2)
=(16÷8):(8÷8)=2:1;
(3)3.6:7.2,
=(3.6÷3.6):(7.2÷3.6),
=1:2;
(4)
:
,
=(
×36):(
×36),
=28:27.
=(12÷12):(144÷12)
=1:12;
(2)
| 16 |
| 8 |
(3)3.6:7.2,
=(3.6÷3.6):(7.2÷3.6),
=1:2;
(4)
| 7 |
| 9 |
| 3 |
| 4 |
=(
| 7 |
| 9 |
| 3 |
| 4 |
=28:27.
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