题目内容

解比例
0.75
x
=
3
2

x:1
3
5
=
5
8
:1
3
4

2
9
5
9
=0.4:x;
1.25
0.25
=
x
8
(1)
0.75
x
=
3
2

3x=0.75×2,
3x=1.5,
3x÷3=1.5÷3,
x=0.5;

(2)x:1
3
5
=
5
8
:1
3
4

1
3
4
x=1
3
5
×
5
8

1
3
4
x=1,
1
3
4
x÷1
3
4
=1÷1
3
4

x=
4
7


(3)
2
9
5
9
=0.4:x,
2
9
x=
5
9
×0.4,
2
9
x÷
2
9
=
2
9
÷
2
9

x=1;

(4)
1.25
0.25
=
x
8

0.25x=1.25×8,
0.25x=10,
0.25x÷0.25=10÷0.25,
x=40.
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网