题目内容
解比例:
①4:x=
:1.5
②1
:
=3
:x.
①4:x=
| 1 |
| 2 |
②1
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 2 |
(1)4:x=
:1.5,
x=4×1.5,
x=6,
x=6÷
,
x=12,
(2)1
:
=3
:x,
1
x=
×3
,
x=
,
x=
÷
,
x=
.
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
x=6÷
| 1 |
| 2 |
x=12,
(2)1
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 2 |
1
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 2 |
| 7 |
| 4 |
| 7 |
| 3 |
x=
| 7 |
| 3 |
| 7 |
| 4 |
x=
| 4 |
| 3 |
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