题目内容
化简比并求比值.
| 125:75 | 1.6:2.4 |
| 0.5:
|
(1)125:75,
=(125÷25):(75÷25),
=5:3;
125:75,
=125÷75,
=
;
(2)1.6:2.4,
=(1.6÷0.8):(2.4÷0.8),
=2:3;
1.6:2.4,
=1.6÷2.4,
=
;
(3)
:1
,
=
:
,
=(
×20):(
×20),
=1:25;
:1
,
=
÷
,
=
×
,
=
;
(4)0.5:
,
=
:
,
=(
×12):(
×12),
=6:5;
0.5:
,
=
÷
,
=
×
,
=
.
=(125÷25):(75÷25),
=5:3;
125:75,
=125÷75,
=
| 5 |
| 3 |
(2)1.6:2.4,
=(1.6÷0.8):(2.4÷0.8),
=2:3;
1.6:2.4,
=1.6÷2.4,
=
| 2 |
| 3 |
(3)
| 1 |
| 20 |
| 1 |
| 4 |
=
| 1 |
| 20 |
| 5 |
| 4 |
=(
| 1 |
| 20 |
| 5 |
| 4 |
=1:25;
| 1 |
| 20 |
| 1 |
| 4 |
=
| 1 |
| 20 |
| 5 |
| 4 |
=
| 1 |
| 20 |
| 4 |
| 5 |
=
| 1 |
| 25 |
(4)0.5:
| 5 |
| 12 |
=
| 1 |
| 2 |
| 5 |
| 12 |
=(
| 1 |
| 2 |
| 5 |
| 12 |
=6:5;
0.5:
| 5 |
| 12 |
=
| 1 |
| 2 |
| 5 |
| 12 |
=
| 1 |
| 2 |
| 12 |
| 5 |
=
| 6 |
| 5 |
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