一、用竖式计算，带⭐的要验算。
$3.9×2.4=$
$1.56×3.4=$
$1.07×1.2=$
$1.02÷1.7=$
$0.324÷0.27=$
$0.705÷4.7=$
$0.018×4.5=$
$52.2÷0.29=$
$0.75×0.16=$
$5.96×0.85=$
$24.18÷6.2=$
$3.57÷0.35=$
$30.1×3.4=$
$3.8×0.67=$
$13.104÷5.6=$

1. 9.36
2. 5.304
3. 1.284
4. 0.6
5. 1.2
6. 0.15
7. 0.081
8. 180
9. 0.12
10. 5.066
11. 3.9
12. 10.2
13. 102.34
14. 2.546
15. 2.34