题目内容
解比例.
0.5:x=
|
| ||||||
| 15:x=0.2:44. |
(1)0.5:x=
:0.25,
x=0.25×0.5,
x=1.25,
x=1.25÷
,
x=1.875,
=
,
75x=25×1.2,
x=
,
x=0.4,
:
=
:x,
x=
×
,
x=
,
x=
÷
,
x=
,
15:x=0.2:44,
0.2x=15×44,
x=
,
x=3300.
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
x=1.25÷
| 2 |
| 3 |
x=1.875,
| x |
| 25 |
| 1.2 |
| 75 |
75x=25×1.2,
x=
| 25×1.2 |
| 75 |
x=0.4,
| 3 |
| 5 |
| 7 |
| 12 |
| 9 |
| 10 |
| 3 |
| 5 |
| 7 |
| 12 |
| 9 |
| 10 |
| 3 |
| 5 |
| 21 |
| 40 |
x=
| 21 |
| 40 |
| 3 |
| 5 |
x=
| 7 |
| 8 |
15:x=0.2:44,
0.2x=15×44,
x=
| 15×44 |
| 0.2 |
x=3300.
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