题目内容
解方程或比例
①1-
| ②
|
(1)1-
x=
,
1-
x+
x=
+
x,
+
x=1,
+
x-
=1-
,
x=
,
x÷
=
÷
,
x=
;
(2)
=
,
1.25x=2×0.75,
1.25x=1.5,
1.25x÷1.25=1.5÷1.25,
x=1.2.
| 3 |
| 4 |
| 2 |
| 5 |
1-
| 3 |
| 4 |
| 3 |
| 4 |
| 2 |
| 5 |
| 3 |
| 4 |
| 2 |
| 5 |
| 3 |
| 4 |
| 2 |
| 5 |
| 3 |
| 4 |
| 2 |
| 5 |
| 2 |
| 5 |
| 3 |
| 4 |
| 3 |
| 5 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 5 |
| 3 |
| 4 |
x=
| 4 |
| 5 |
(2)
| x |
| 2 |
| 0.75 |
| 1.25 |
1.25x=2×0.75,
1.25x=1.5,
1.25x÷1.25=1.5÷1.25,
x=1.2.
练习册系列答案
相关题目