题目内容
解比例.
8:2.5=x:0.5
:x=
:
=
.
8:2.5=x:0.5
| 5 |
| 12 |
| 1 |
| 5 |
| 9 |
| 20 |
| 3.6 |
| x |
| 1 |
| 400000 |
(1)8:2.5=x:0.5
2.5x=8×0.5
2.5x÷2.5=4÷2.5
x=1.6;
(2)
:x=
:
x=
×
x÷
=
÷
x=
;
(3)
=
x=3.6×400000
x=1440000.
2.5x=8×0.5
2.5x÷2.5=4÷2.5
x=1.6;
(2)
| 5 |
| 12 |
| 1 |
| 5 |
| 9 |
| 20 |
| 1 |
| 5 |
| 5 |
| 12 |
| 9 |
| 20 |
| 1 |
| 5 |
| 1 |
| 5 |
| 3 |
| 16 |
| 1 |
| 5 |
x=
| 15 |
| 16 |
(3)
| 3.6 |
| x |
| 1 |
| 400000 |
x=3.6×400000
x=1440000.
练习册系列答案
相关题目