题目内容
化简下列各比,并求出比值.
| 3:2.5 |
|
| 0.75小时:15分. |
3:2.5,
=(3×10):(2.5×10),
=30:25,
=(30÷5):(25÷5),
=6:5;
3:2.5,
=3÷2.5,
=1.2,
:2,
=(
×
):(2×
),
=1:5;
:2,
=
:2,
=0.2;
:
,
=(
×
):(
×
),
=3:2;
:
,
=
÷
,
=1.5;
0.75小时:15分,
=45分:15分,
=45:15,
=(45÷15):(15÷15),
=3:1;
0.75小时:15分,
=45分:15分,
=45÷15,
=3.
=(3×10):(2.5×10),
=30:25,
=(30÷5):(25÷5),
=6:5;
3:2.5,
=3÷2.5,
=1.2,
| 2 |
| 5 |
=(
| 2 |
| 5 |
| 5 |
| 2 |
| 5 |
| 2 |
=1:5;
| 2 |
| 5 |
=
| 2 |
| 5 |
=0.2;
| 5 |
| 6 |
| 5 |
| 9 |
=(
| 5 |
| 6 |
| 18 |
| 5 |
| 5 |
| 9 |
| 18 |
| 5 |
=3:2;
| 5 |
| 6 |
| 5 |
| 9 |
=
| 5 |
| 6 |
| 5 |
| 9 |
=1.5;
0.75小时:15分,
=45分:15分,
=45:15,
=(45÷15):(15÷15),
=3:1;
0.75小时:15分,
=45分:15分,
=45÷15,
=3.
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