题目内容
把结果符合要求的算式序号写在相应的方框里.
①
+
②
+
③
-
④1-
⑤
+
⑥
-
.
①
| 2 |
| 9 |
| 1 |
| 3 |
②
| 1 |
| 10 |
| 3 |
| 7 |
③
| 3 |
| 5 |
| 1 |
| 2 |
④1-
| 1 |
| 9 |
⑤
| 5 |
| 6 |
| 1 |
| 4 |
⑥
| 1 |
| 10 |
| 1 |
| 20 |
①
| 2 |
| 9 |
| 1 |
| 3 |
| 5 |
| 9 |
| 1 |
| 2 |
②
| 1 |
| 10 |
| 3 |
| 7 |
| 37 |
| 70 |
| 1 |
| 2 |
③
| 3 |
| 5 |
| 1 |
| 2 |
| 1 |
| 10 |
④1-
| 1 |
| 9 |
| 8 |
| 9 |
⑤
| 5 |
| 6 |
| 1 |
| 4 |
| 13 |
| 12 |
⑥
| 1 |
| 10 |
| 1 |
| 20 |
| 1 |
| 20 |
故答案为:
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