题目内容
解比例
| 0.5:0.8=x:14 |
| x:10%=3:
| ||||||
| 1.5:x=0.2:44 | x:0.5=
|
(1)0.5:0.8=x:14
0.8x=0.5×14
0.8x÷0.8=7÷0.8
x=8.75;
(2)
=
25x=75×1.2
25x÷25=90÷25
x=3.6;
(3)x:10%=3:
x=10%×3
x÷
=0.3÷
x=
;
(4)
:12=
:x
x=12×
x÷
=10÷
x=45;
(5)1.5:x=0.2:44
0.2x=1.5×44
0.2x÷0.2=66÷0.2
x=330;
(6)x:0.5=
:4
4x=0.5×
4x÷4=
÷4
x=
.
0.8x=0.5×14
0.8x÷0.8=7÷0.8
x=8.75;
(2)
| x |
| 75 |
| 1.2 |
| 25 |
25x=75×1.2
25x÷25=90÷25
x=3.6;
(3)x:10%=3:
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
x=
| 3 |
| 4 |
(4)
| 2 |
| 9 |
| 5 |
| 6 |
| 2 |
| 9 |
| 5 |
| 6 |
| 2 |
| 9 |
| 2 |
| 9 |
| 2 |
| 9 |
x=45;
(5)1.5:x=0.2:44
0.2x=1.5×44
0.2x÷0.2=66÷0.2
x=330;
(6)x:0.5=
| 2 |
| 3 |
4x=0.5×
| 2 |
| 3 |
4x÷4=
| 1 |
| 3 |
x=
| 1 |
| 12 |
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