题目内容
化简下面各比并求出比值:
:
:
6:
.
| 2 |
| 5 |
| 1 |
| 2 |
| 1 |
| 5 |
| 3 |
| 7 |
6:
| 2 |
| 3 |
(1)
:
,
=(
×10):(
×10),
=4:5;
:
,
=4:5,
=4÷5,
=
.
(2)
:
,
=(
×35):(
×35),
=7:15;
:
,
=7:15,
=7÷15,
=
.
(3)6:
,
=(6×3):(
×3),
=18:2,
=9:1;
6:
,
=9:1,
=9÷1,
=9.
| 2 |
| 5 |
| 1 |
| 2 |
=(
| 2 |
| 5 |
| 1 |
| 2 |
=4:5;
| 2 |
| 5 |
| 1 |
| 2 |
=4:5,
=4÷5,
=
| 4 |
| 5 |
(2)
| 1 |
| 5 |
| 3 |
| 7 |
=(
| 1 |
| 5 |
| 3 |
| 7 |
=7:15;
| 1 |
| 5 |
| 3 |
| 7 |
=7:15,
=7÷15,
=
| 7 |
| 15 |
(3)6:
| 2 |
| 3 |
=(6×3):(
| 2 |
| 3 |
=18:2,
=9:1;
6:
| 2 |
| 3 |
=9:1,
=9÷1,
=9.
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