一、口算。
$6×0.95=$
$0.13×0.3=$
$2.73+0.37=$
$0.78+2.2=$
$0.65×20=$
$0.48÷0.4=$
$96÷0.24=$
$2.4÷0.1=$
$2.75×200=$
$9.6÷40=$
$37.5×20=$
$20.5+2.05=$
$\frac{2}{9}+0.25=$
$\frac{5}{6}-\frac{3}{4}=$
$\frac{1}{5}÷\frac{7}{15}=$
$20÷\frac{5}{8}=$
$\frac{3}{8}×\frac{8}{3}=$
$\frac{4}{7}×\frac{1}{4}=$
$\frac{2}{15}×\frac{5}{6}=$
$0.75×\frac{2}{3}=$
$\frac{6}{7}÷\frac{5}{6}=$
$\frac{1}{6}×\frac{7}{10}=$
$\frac{14}{15}-\frac{2}{5}=$
$\frac{7}{24}÷\frac{1}{8}=$

1. 5.7
2. 0.039
3. 3.1
4. 2.98
5. 13
6. 1.2
7. 400
8. 24
9. 550
10. 0.24
11. 750
12. 22.55
13. $\frac{17}{36}$
14. $\frac{1}{12}$
15. $\frac{3}{7}$
16. 32
17. 1
18. $\frac{1}{7}$
19. $\frac{1}{9}$
20. $\frac{1}{2}$
21. $\frac{36}{35}$
22. $\frac{7}{60}$
23. $\frac{8}{15}$
24. $\frac{7}{3}$

二、计算下面各题，能简算的要简算。
$(30+\dfrac{5}{7})×\dfrac{7}{10}$
$\dfrac{4}{3}×4.6-\dfrac{4}{3}×2.2$
$\dfrac{4}{15}×\dfrac{3}{2}-\dfrac{1}{6}÷\dfrac{1}{2}$
$1.5×9.9+15×0.01$
$570÷2.5×4+88$
$40.5÷0.81-0.875×32$

1. $21\frac{1}{2}$
2. $\frac{16}{5}$
3. $\frac{1}{15}$
4. 15
5. 1000
6. 22