| 心算． 0.5×5= | 0.18+0.82= | 2.1+0.6+7.9= |
| 0.6÷0.2= | 0.09×1000= | 0.8×3.5×0.125= |
| 1.2÷4= | 5.52÷100= | 1.3×3÷10= |
| 0.72÷6= | 5.52÷0.01= | 5÷0.5÷2= |
| 3.9-3= | 0.1×6.9= | 0.9+0.9÷0.9= |
| 0.5×5=2.5 | 0.18+0.82=1 | 2.1+0.6+7.9=10.6 |
| 0.6÷0.2=3 | 0.09×1000=90 | 0.8×3.5×0.125=0.35 |
| 1.2÷4=0.3 | 5.52÷100=0.0552 | 1.3×3÷10=0.39 |
| 0.72÷6=0.12 | 5.52÷0.01=552 | 5÷0.5÷2=5 |
| 3.9-3=0.9 | 0.1×6.9=0.69 | 0.9+0.9÷0.9=1.9 |