题目内容
解比例.
(1)8:x=
(2)
:x=
:
(3)4:
=x:
.
(1)8:x=
| 1 |
| 12 |
(2)
| 7 |
| 2 |
| 8 |
| 7 |
| 2 |
| 5 |
(3)4:
| 2 |
| 3 |
| 2 |
| 5 |
(1)8:x=
x=12×8
x=96
(2)
:x=
:
x=
×
x÷
=
÷
x=
(3)4:
=x:
x=4×
x÷
=
÷
x=
.
| 1 |
| 12 |
x=12×8
x=96
(2)
| 7 |
| 2 |
| 8 |
| 7 |
| 2 |
| 5 |
| 8 |
| 7 |
| 7 |
| 2 |
| 2 |
| 5 |
| 8 |
| 7 |
| 8 |
| 7 |
| 7 |
| 5 |
| 8 |
| 7 |
x=
| 49 |
| 40 |
(3)4:
| 2 |
| 3 |
| 2 |
| 5 |
| 2 |
| 3 |
| 2 |
| 5 |
| 2 |
| 3 |
| 2 |
| 3 |
| 8 |
| 5 |
| 2 |
| 3 |
x=
| 12 |
| 5 |
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