题目内容
我会解方程.
x÷4=
x=
x-
x=5
x×40%=40.
| 1 |
| 5 |
| 1 |
| 5 |
| 3 |
| 4 |
| 5 |
| 8 |
x-
| 4 |
| 5 |
x×40%=40.
①
x÷4=
x×
=
x=
x×20=
×20
x=4;
②
x=
x×
=
×
x=
;
③x-
x=5
x×5=5×5
x=25;
④x×40%=40
0.4x=40
0.4x÷0.4=40÷0.4
x=100.
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 4 |
| 1 |
| 5 |
| 1 |
| 20 |
| 1 |
| 5 |
| 1 |
| 20 |
| 1 |
| 5 |
x=4;
②
| 3 |
| 4 |
| 5 |
| 8 |
| 3 |
| 4 |
| 4 |
| 3 |
| 5 |
| 8 |
| 4 |
| 3 |
x=
| 5 |
| 6 |
③x-
| 4 |
| 5 |
| 1 |
| 5 |
x=25;
④x×40%=40
0.4x=40
0.4x÷0.4=40÷0.4
x=100.
练习册系列答案
相关题目