9．直接写出得数．
| 87.5%-$\frac{1}{4}$= | 98×50%= | 57÷30%= | 1+40%×2= |
| 1÷25%= | $\frac{4}{5}$-20%= | 95%-8%= | 40%+0.5= |
8．某种粮食专业户去年收粮8吨，今年比去年增产二成，今年收粮（ ）吨．
| A． | 8.2 | B． | 9.6 | C． | 10 |
7．妈妈去银行存500元钱，一年后到期可取509元，这种存款方式的年利率是（ ）
0 136566 136574 136580 136584 136590 136592 136596 136602 136604 136610 136616 136620 136622 136626 136632 136634 136640 136644 136646 136650 136652 136656 136658 136660 136661 136662 136664 136665 136666 136668 136670 136674 136676 136680 136682 136686 136692 136694 136700 136704 136706 136710 136716 136722 136724 136730 136734 136736 136742 136746 136752 136760 199269
| A． | 9% | B． | 1.8% | C． | 4.5% |