题干
用简便算法计算(-
+
-
+
)x(-24)
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 8 |
| 1 |
答案(点此获取答案解析）
解：(-
+
-
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 8 |
| 1 |
| 1 |
| 4 |
| 1 |
| 6 |
