| 2.8+2= | 3.8+6.2= | \( \frac {1}{2}\)-\( \frac {1}{5}\)= | 371-199= | 10-0.5= | 0.2×0.3= |
| 0.25×40= | 1-\( \frac {1}{7}\)= | 12.5×0.8= | 21÷\( \frac {3}{7}\)= | 0÷0.5= | \( \frac {1}{3}\)×\( \frac {1}{3}\)= |
| 6.4÷0.8= | \( \frac {9}{28}\)×\( \frac {7}{9}\)= | 4×\( \frac {1}{40}\)= | 3÷0.6= | 6×2.5= | \( \frac {4}{5}\)-\( \frac {3}{10}\)= |
| 8.1÷9= | 0.2+\( \frac {1}{5}\)= | 1÷0.25= | 5-0.5= | \( \frac {2}{3}\)÷10= | \( \frac {9}{20}\)÷3= |
| \( \frac {3}{5}\)×25= | \( \frac {5}{8}\)+\( \frac {1}{8}\)= | \( \frac {7}{8}\)×0.4= | 0.2÷5= | 1.25×3×8= | 2.5+2.5÷5= |