10.计算,能简算的要简算.
| 200-(132+1080÷36) | 86+(379+214) | 99×39+39 |
| 520-3000÷75×6 | 72×125 | 5000÷8÷125. |
9.计算下面各题,能简便计算的要用简便方法计算.
| 296+73+104+27 | 1600÷25÷4 | 125×54-46×125 |
| 898-(86+298) | 125×25×32 | 99+99×99. |
8.直接写出得数.
| 2.05÷100═ | 25×44= | 6×13-3×6= | 100×0.36= |
| 927÷9= | 400÷50= | 23×30= | 7000÷8÷7. |
7.下面各数中把“0”去掉大小不变的是( )
| A. | 7.05 | B. | 70.55 | C. | 7.550 |
4.口算.
0 136515 136523 136529 136533 136539 136541 136545 136551 136553 136559 136565 136569 136571 136575 136581 136583 136589 136593 136595 136599 136601 136605 136607 136609 136610 136611 136613 136614 136615 136617 136619 136623 136625 136629 136631 136635 136641 136643 136649 136653 136655 136659 136665 136671 136673 136679 136683 136685 136691 136695 136701 136709 199269
| 6.8÷1.7= | 9×1.5= | (3.6-3.6)÷1.8= |
| 0.25×71×4= | 1÷0.125= | 0.125×0.8= |
| 0.64÷1.6= | 6.3+2.45+3.7= | 3.21-2.3-0.21= |