题目内容
| 121×12 | 5×912 | 408×33 | 312×16. |
121×12=1452,
121
5×912=4560,
912
408×33=13464,
408
312×16=4992,
312
121
| ×12 |
| 242 |
| 121 |
| 1452 |
5×912=4560,
912
| ×5 |
| 4560 |
408×33=13464,
408
| ×33 |
| 1224 |
| 1224 |
| 13464 |
312×16=4992,
312
| ×16 |
| 1872 |
| 312 |
| 4992 |
练习册系列答案
相关题目