题目内容
| 解比例. X:
| X:2.4=0.5:12 |
|
x:
=
:
,
x=
×
,
x×3=
×3,
x=
,
x:2.4=0.5:12,
12x=2.4×0.5,
12x÷12=1.2÷12,
x=0.1,
=
,
6x=2.5×18,
6x÷6=45÷6,
x=7.5.
| 2 |
| 3 |
| 3 |
| 4 |
| 1 |
| 3 |
| 1 |
| 3 |
| 2 |
| 3 |
| 3 |
| 4 |
| 1 |
| 3 |
| 1 |
| 2 |
x=
| 3 |
| 2 |
x:2.4=0.5:12,
12x=2.4×0.5,
12x÷12=1.2÷12,
x=0.1,
| 2.5 |
| 6 |
| x |
| 18 |
6x=2.5×18,
6x÷6=45÷6,
x=7.5.
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