1. 直接写出得数。
1 ÷ $\frac{11}{9}$ =
$\frac{6}{13}$ ÷ 18 =
$\frac{13}{42}$ ÷ 26 =
42 × $\frac{9}{14}$ =
$\frac{18}{23}$ ÷ 9 =
$\frac{21}{32}$ ÷ 7 =
2.4 ÷ $\frac{3}{8}$ =
30 ÷ $\frac{5}{6}$ =
$\frac{8}{9}$ ÷ $\frac{2}{3}$ =
$\frac{2}{7}$ ÷ $\frac{8}{5}$ =
$\frac{3}{5}$ ÷ $\frac{5}{6}$ =
$\frac{2}{21}$ ÷ $\frac{6}{7}$ =
$\frac{6}{7}$ ÷ $\frac{15}{28}$ =
$\frac{9}{11}$ ÷ $\frac{12}{17}$ =
$\frac{4}{5}$ ÷ $\frac{3}{10}$ =
$\frac{13}{24}$ ÷ $\frac{26}{27}$ =
$\frac{14}{15}$ ÷ $\frac{7}{9}$ =
$\frac{4}{15}$ ÷ $\frac{8}{9}$ =
$\frac{9}{10}$ ÷ $\frac{6}{13}$ =
$\frac{5}{8}$ ÷ $\frac{15}{4}$ =
$\frac{25}{48}$ ÷ $\frac{5}{16}$ =
$\frac{24}{65}$ ÷ $\frac{18}{13}$ =
$\frac{25}{9}$ ÷ $\frac{5}{27}$ =
$\frac{19}{35}$ ÷ $\frac{57}{14}$ =

1. $\frac{9}{11}$
2. $\frac{1}{39}$
3. $\frac{1}{84}$
4. 27
5. $\frac{2}{23}$
6. $\frac{3}{32}$
7. 6.4
8. 36
9. $\frac{4}{3}$
10. $\frac{5}{28}$
11. $\frac{18}{25}$
12. $\frac{1}{9}$
13. $\frac{8}{5}$
14. $\frac{51}{44}$
15. $\frac{8}{3}$
16. $\frac{9}{16}$
17. $\frac{6}{5}$
18. $\frac{3}{10}$
19. $\frac{39}{20}$
20. $\frac{1}{6}$
21. $\frac{5}{3}$
22. $\frac{4}{15}$
23. 15
24. $\frac{2}{15}$

2. 计算下面各题，能简算的要简算。
$\frac{7}{12} ÷ \frac{4}{5} ÷ \frac{7}{12}$
$\frac{4}{17} ÷ \frac{3}{5} + \frac{4}{17} ÷ \frac{3}{5}$
$\frac{1}{3} ÷ (\frac{2}{3} - \frac{2}{5}) × \frac{3}{5}$
$\frac{2}{9} × \frac{3}{8} ÷ \frac{6}{7}$
$1 - \frac{7}{36} ÷ \frac{5}{18} - \frac{5}{18}$
$\frac{1}{3} × \frac{3}{4} ÷ (\frac{3}{4} - \frac{5}{12})$
$(\frac{1}{6} + \frac{7}{9} - \frac{5}{12}) ÷ \frac{1}{36}$
$\frac{7}{10} ÷ [ (0.4 - \frac{1}{3}) ÷ \frac{3}{5} ]$
$\frac{2}{9} × 41 + 50 ÷ \frac{9}{2} - \frac{2}{9}$

1. $\frac{5}{4}$
2. $\frac{40}{51}$
3. $\frac{3}{4}$
4. $\frac{7}{72}$
5. $\frac{1}{45}$
6. $\frac{3}{4}$
7. 19
8. $\frac{63}{10}$
9. 20