简便计算(要求写出简便过程)
| (1)( | (2) | (3)2011× |
| (4)0.4× | (5) | (6) |
用递等式计算(能简算的请简算)
| ①7.6-4.8+8.4-5.2 | ②4×0.8×2.5×1.25 | ③ |
| ④1375-375÷15×18 | ⑤1.05×(3.8-0.8)÷6.3 | ⑥ |
直接写出得数
| 1÷ |
| (1)( | (2) | (3)2011× |
| (4)0.4× | (5) | (6) |
| ①7.6-4.8+8.4-5.2 | ②4×0.8×2.5×1.25 | ③ |
| ④1375-375÷15×18 | ⑤1.05×(3.8-0.8)÷6.3 | ⑥ |
| 1÷ |