能简算的要简算．
| 19.28+1.82÷0.7 |
13.35﹣4.6+2.65 |
4.36×12.5×8 |
| 9.7×99+9.7 |
320÷1.25÷8 |
2.25×[0.576÷（2.56+3.2）] |
竖式计算．
7.082﹣5.985
4.58×1.05
★40.8÷0.3
8.07×0.32
24.4÷7.4．
口算．
| 0.76﹣0.6= |
8.4×5= |
3.2﹣1.34﹣1.66= |
1.25×0.8= |
| 7.2÷0.072= |
12.8﹣0.28= |
3.6×0.7÷3.6×0.7= |
2.5f﹣f= |
下面各题，怎样算简便就怎样算．
6.8+0.98+0.2
43.5+43.5×99
1.25×7.2
11÷[（0.4+0.04）×0.5]．
用竖式计算
19﹣0.07=
0.63×3.6=
9.45+0.65=
5.15÷86≈（保留两位小数）