题目内容
化简
| 18:24 | 3:0.5 |
| 1.5小时:45分. |
(1)18:24,
=(18÷6):(24÷6),
=3:4;
(2)3:0.5,
=(3×2):(0.5×2),
=6:1;
(3)
:
,
=(
×72):(
×72),
=45:40,
=9:8;
(4)1.5小时:45分,
=90分:45分,
=(90÷45):(45÷45),
=2:1.
=(18÷6):(24÷6),
=3:4;
(2)3:0.5,
=(3×2):(0.5×2),
=6:1;
(3)
| 5 |
| 8 |
| 5 |
| 9 |
=(
| 5 |
| 8 |
| 5 |
| 9 |
=45:40,
=9:8;
(4)1.5小时:45分,
=90分:45分,
=(90÷45):(45÷45),
=2:1.
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