题目内容
解比例.
0.72:x=9.6:4.8 | 12:
|
|
x:
|
(1)0.72:x=9.6:4.8,
9.6x=0.72×4.8,
9.6x÷9.6=3.456÷9.6,
x=0.36;
(2)12:
=x:0.5,
x=12×0.5,
x÷
=6÷
,
x=10;
(3)
:
=
,
x=
×15,
x÷
=
÷
,
x=8;
(4)x:
=28:
,
x=
×28,
x÷
=7÷
,
x=42.
9.6x=0.72×4.8,
9.6x÷9.6=3.456÷9.6,
x=0.36;
(2)12:
3 |
5 |
3 |
5 |
3 |
5 |
3 |
5 |
3 |
5 |
x=10;
(3)
5 |
6 |
4 |
9 |
15 |
x |
5 |
6 |
4 |
9 |
5 |
6 |
5 |
6 |
20 |
3 |
5 |
6 |
x=8;
(4)x:
1 |
4 |
1 |
6 |
1 |
6 |
1 |
4 |
1 |
6 |
1 |
6 |
1 |
6 |
x=42.
练习册系列答案
相关题目