口算:
| 39÷3= | 60÷20= | 90÷30= | 80÷40= |
| 180÷30= | 240÷40= | 420÷60= | 300÷50= |
口算:
| 7.2+1.8﹦ | 0.45÷10﹦ | 0.125×8﹦ | 9.6÷0.96﹦ | 3÷0.5= |
| 5-3.2﹦ | 6×0.5﹦ | 6.3÷0.9= | 0.1-0.01﹦ | 16×0.125= |
| 39÷3= | 60÷20= | 90÷30= | 80÷40= |
| 180÷30= | 240÷40= | 420÷60= | 300÷50= |
| 7.2+1.8﹦ | 0.45÷10﹦ | 0.125×8﹦ | 9.6÷0.96﹦ | 3÷0.5= |
| 5-3.2﹦ | 6×0.5﹦ | 6.3÷0.9= | 0.1-0.01﹦ | 16×0.125= |