题目内容
化简下面各比
| 16:30 | 3.5:0.7 | 0.5吨:25千克 | ||||||||
|
| 15分:1时. |
(1)16:30,
=(16÷2):(30÷2),
=8:15;
(2)3.5:0.7,
=(3.5×10÷7):(0.7×10÷7),
=5:1;
(3)0.5吨:25千克,
=500千克:25千克,
=(500÷25):(25÷25),
=20:1;
(4)
:
,
=(
×6):(
×6),
=4:1;
(5)
:
,
=(
×18):(
×18),
=4:15;
(6)15分:1时,
=15分:60分,
=(15÷15):(60÷15),
=1:4.
=(16÷2):(30÷2),
=8:15;
(2)3.5:0.7,
=(3.5×10÷7):(0.7×10÷7),
=5:1;
(3)0.5吨:25千克,
=500千克:25千克,
=(500÷25):(25÷25),
=20:1;
(4)
| 2 |
| 3 |
| 1 |
| 6 |
=(
| 2 |
| 3 |
| 1 |
| 6 |
=4:1;
(5)
| 2 |
| 9 |
| 5 |
| 6 |
=(
| 2 |
| 9 |
| 5 |
| 6 |
=4:15;
(6)15分:1时,
=15分:60分,
=(15÷15):(60÷15),
=1:4.
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