题目内容
化简下面各比
| 3cm:60km | 1.25:2 | 4.5:6. |
(1)
:
,
=(
×6):(
×6),
=5:3,
(2)3cm:60km,
=3cm:6000000cm,
=(3÷3):(6000000÷3),
=1:2000000,
(3)1.25:2,
=(1.25×4):(2×4),
=5:8,
(4)4.5:6,
=(4.5÷1.5):(6÷1.5),
=3:4.
| 5 |
| 6 |
| 1 |
| 2 |
=(
| 5 |
| 6 |
| 1 |
| 2 |
=5:3,
(2)3cm:60km,
=3cm:6000000cm,
=(3÷3):(6000000÷3),
=1:2000000,
(3)1.25:2,
=(1.25×4):(2×4),
=5:8,
(4)4.5:6,
=(4.5÷1.5):(6÷1.5),
=3:4.
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