题目内容
61×
-1÷17×47+20÷17.
| 1 |
| 17 |
61×
-1÷17×47+20÷17
=61×
-1×
×47+20×
=61×
-47×
+20×
=(61-47+20)×
=34×
=2.
| 1 |
| 17 |
=61×
| 1 |
| 17 |
| 1 |
| 17 |
| 1 |
| 17 |
=61×
| 1 |
| 17 |
| 1 |
| 17 |
| 1 |
| 17 |
=(61-47+20)×
| 1 |
| 17 |
=34×
| 1 |
| 17 |
=2.
练习册系列答案
相关题目