题目内容
| 解比例. X:14=6:28 |
|
| ||||||||||
| 0.5:0.25=x:6 |
|
|
(1)X:14=6:28,
28X=14×6,
28X=84,
x=3;
(2)
=
,
0.25x=0.75×3,
0.25x=2.25,
x=9;
(3)
:
=x:
,
x=
×6,
x=
,
x=
;
(4)0.5:0.25=x:6,
0.25x=0.5×6,
0.25x=3,
x=12;
(5)
=
,
0.4x=2×0.08,
0.4x=0.16,
x=0.4;
(6)
:x=4:12,
4x=
×12,
4x=4,
x=1.
28X=14×6,
28X=84,
x=3;
(2)
| 0.75 |
| x |
| 0.25 |
| 3 |
0.25x=0.75×3,
0.25x=2.25,
x=9;
(3)
| 3 |
| 8 |
| 1 |
| 3 |
| 1 |
| 6 |
| 1 |
| 3 |
| 3 |
| 8 |
| 1 |
| 3 |
| 9 |
| 4 |
x=
| 27 |
| 4 |
(4)0.5:0.25=x:6,
0.25x=0.5×6,
0.25x=3,
x=12;
(5)
| x |
| 0.08 |
| 2 |
| 0.4 |
0.4x=2×0.08,
0.4x=0.16,
x=0.4;
(6)
| 1 |
| 3 |
4x=
| 1 |
| 3 |
4x=4,
x=1.
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