口算.
| 3.2×0.2 | 1.4×0.4 | 3.3÷3 | 1.2÷0.3 | 5.6÷0.4 |
| 2.5×0.4 | 1.5×2 | 7.3+2.7 | 8.4÷0.7 | 4.5÷0.9 |
| 0.53-0.3 | 7.8÷6 | 8.4÷0.21 | 0.6×0.5 | 8.1×2 |
| 5.6+3.6 | 9-2.35 | 0.56÷8 | 1.23×3 | 12.5÷0.1. |
| 3.2×0.2 | 1.4×0.4 | 3.3÷3 | 1.2÷0.3 | 5.6÷0.4 |
| 2.5×0.4 | 1.5×2 | 7.3+2.7 | 8.4÷0.7 | 4.5÷0.9 |
| 0.53-0.3 | 7.8÷6 | 8.4÷0.21 | 0.6×0.5 | 8.1×2 |
| 5.6+3.6 | 9-2.35 | 0.56÷8 | 1.23×3 | 12.5÷0.1. |