问题
填空题
-7+13-6+20=______；
|
答案
①-7+13-6+20
=（-7-6）+（13+20）
=-13+33
=20；
②
| 3 |
| 7 |
| 1 |
| 7 |
=
| 3 |
| 7 |
| 7 |
| 15 |
=-
| 1 |
| 5 |
③-64÷3
| 1 |
| 5 |
| 5 |
| 8 |
=-64×
| 5 |
| 16 |
| 5 |
| 8 |
=-
| 25 |
| 2 |
搜题请搜索小程序“爱下问搜题”
-7+13-6+20=______；
|
①-7+13-6+20
=（-7-6）+（13+20）
=-13+33
=20；
②
| 3 |
| 7 |
| 1 |
| 7 |
=
| 3 |
| 7 |
| 7 |
| 15 |
=-
| 1 |
| 5 |
③-64÷3
| 1 |
| 5 |
| 5 |
| 8 |
=-64×
| 5 |
| 16 |
| 5 |
| 8 |
=-
| 25 |
| 2 |