11．简便计算．
| 12.5×3.2×0.25 | 63×10.1-6.3 |
| 0.75+0.75×16.3+0.75×2.7 | 36.4×9.9+3.64 |
| 6.24-3.34-2.66 | 12.5×（10+0.8） |
| 9.9×9+9.9 | 4.4+4.4×12+13×5.6 |
9．直接写出得数．
0 162528 162536 162542 162546 162552 162554 162558 162564 162566 162572 162578 162582 162584 162588 162594 162596 162602 162606 162608 162612 162614 162618 162620 162622 162623 162624 162626 162627 162628 162630 162632 162636 162638 162642 162644 162648 162654 162656 162662 162666 162668 162672 162678 162684 162686 162692 162696 162698 162704 162708 162714 162722 199269
| 0.24×25= | 9.9×10.1= | 0.65×0.2= |
| 50×0.74×0.2= | 125×0.08= | 80×0.05= |
| 2.5×0.4= | 3.2×0.9+0.32= | 0.8×1.25×6.2= |
| 80×0.25-9.8= | 10.1×5.6-0.56= | 99×7.8+7.8= |