题目内容
| 解比例: (1)X:4.8=4:32 | (2)
| ||||||
(3)
| (4)2.5:4=1.25:X. |
(1)X:4.8=4:32,
32x=4.8×4,
32x=19.2,
32x÷32=19.2÷32,
x=0.6;
(2)
=
,
1.6x=0.9×4,
1.6x=3.6,
1.6x÷1.6=3.6÷1.6,
x=2.15;
(3)
:X=
:
,
x=
×
,
x=
,
x÷
=
÷
,
x=
;
(4)2.5:4=1.25:X,
2.5x=4×1.25,
2.5x=5,
2.5x÷2.5=5÷2.5,
x=2.
32x=4.8×4,
32x=19.2,
32x÷32=19.2÷32,
x=0.6;
(2)
| 1.6 |
| 0.9 |
| x |
| 4 |
1.6x=0.9×4,
1.6x=3.6,
1.6x÷1.6=3.6÷1.6,
x=2.15;
(3)
| 2 |
| 3 |
| 9 |
| 10 |
| 3 |
| 5 |
| 9 |
| 10 |
| 2 |
| 3 |
| 3 |
| 5 |
| 9 |
| 10 |
| 2 |
| 5 |
| 9 |
| 10 |
| 9 |
| 10 |
| 2 |
| 5 |
| 9 |
| 10 |
x=
| 4 |
| 9 |
(4)2.5:4=1.25:X,
2.5x=4×1.25,
2.5x=5,
2.5x÷2.5=5÷2.5,
x=2.
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