题目内容
把下面计算补充完整
1-
-
方法一:
1-
-
=
-
-
=
=______;
你还可以怎样做

1-
| 1 |
| 3 |
| 2 |
| 3 |
方法一:
1-
| 1 |
| 3 |
| 2 |
| 3 |
=
| 3 |
| 3 |
| 1 |
| 3 |
| 2 |
| 3 |
=
| () |
| 3 |
=______;
你还可以怎样做
方法一:
1-
| 1 |
| 3 |
| 2 |
| 3 |
=
| 3 |
| 3 |
| 1 |
| 3 |
| 2 |
| 3 |
=
| 3-1-2 |
| 3 |
=0;
方法二:
1-
| 1 |
| 3 |
| 2 |
| 3 |
=1-(
| 1 |
| 3 |
| 2 |
| 3 |
=1-1,
=0.
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