题干
脱式计算（能简算的要简算）
| 7 |
| 1 |
| 9 |
| 4 |
12.69﹣4.12﹣5.88
0.6×3.3+
×7.7﹣0.6
| 3 |
| 5 |
（
+
）×24×
．
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 9 |
| 7 |
| 1 |
| 9 |
| 4 |
| 3 |
| 5 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 9 |
