我能算得又对又快.
| 1- | 45÷9= | 900×2= | 340-70= | |
| 40×5= | 37×0= | 9×9-1= | 60÷7= | 701×5= |
| 3200-200= | 6×8+8= | 1800×3= | 63÷9= | 0×9+8= |
| 49×9≈ | 404×4≈ | 301×5≈ | 0×2÷62= | 4+6×9= |
| 1- | 45÷9= | 900×2= | 340-70= | |
| 40×5= | 37×0= | 9×9-1= | 60÷7= | 701×5= |
| 3200-200= | 6×8+8= | 1800×3= | 63÷9= | 0×9+8= |
| 49×9≈ | 404×4≈ | 301×5≈ | 0×2÷62= | 4+6×9= |