题目内容
化简下面各比.
| 0.07:0.21 |
|
|
(1)0.07:0.21,
=(0.07×100):(0.21×100),
=7:21,
=1:3;
(2)
:
,
=(
×16):(
×16),
=12:9,
=4:3;
(3)
:8,
=(
×5):(8×5),
=4:40,
=1:10.
=(0.07×100):(0.21×100),
=7:21,
=1:3;
(2)
| 3 |
| 4 |
| 9 |
| 16 |
=(
| 3 |
| 4 |
| 9 |
| 16 |
=12:9,
=4:3;
(3)
| 4 |
| 5 |
=(
| 4 |
| 5 |
=4:40,
=1:10.
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