$\frac{2}{5} ÷ 6 =$
$\frac{5}{18} ÷ 5 =$
$\frac{12}{13} ÷ 3 =$
$\frac{4}{7} ÷ 8 =$
$\frac{1}{8} ÷ 8 =$
$\frac{12}{13} ÷ 12 =$
$\frac{9}{17} ÷ 9 =$
$\frac{8}{9} ÷ 3 =$
$\frac{3}{5} ÷ 7 =$
$\frac{5}{6} ÷ 3 =$
$\frac{18}{5} ÷ 9 =$
$\frac{6}{11} ÷ 6 =$
$\frac{9}{10} ÷ 3 =$
$\frac{8}{19} ÷ 16 =$
$\frac{17}{2} ÷ 34 =$
$\frac{15}{23} ÷ 30 =$
$\frac{40}{41} ÷ 10 =$
$\frac{3}{16} ÷ 4 =$
$\frac{2}{9} ÷ 3 =$
$\frac{36}{5} ÷ 18 =$

1. $\frac{1}{15}$
2. $\frac{1}{18}$
3. $\frac{4}{13}$
4. $\frac{1}{14}$
5. $\frac{1}{64}$
6. $\frac{1}{13}$
7. $\frac{1}{17}$
8. $\frac{8}{27}$
9. $\frac{3}{35}$
10. $\frac{5}{18}$
11. $\frac{2}{5}$
12. $\frac{1}{11}$
13. $\frac{3}{10}$
14. $\frac{1}{38}$
15. $\frac{1}{4}$
16. $\frac{1}{46}$
17. $\frac{4}{41}$
18. $\frac{3}{64}$
19. $\frac{2}{27}$
20. $\frac{2}{5}$

2 笔算（照样子，算一算） 建议用时4分钟 评价：☆☆☆
$\frac{8}{5}÷2=\frac{8}{5}×\frac{1}{2}=\frac{4}{5}$
$\frac{39}{16}÷13$
$\frac{9}{12}÷81$
$\frac{26}{27}÷52$
$\frac{12}{13}÷144$
$\frac{50}{9}÷125$
$\frac{32}{7}÷16$
$\frac{56}{9}÷21$
$\frac{35}{17}÷28$
$\frac{33}{35}÷22$
$\frac{17}{25}÷17$
$\frac{50}{51}÷5$

解：
$\frac{39}{16}÷13=\frac{39}{16}×\frac{1}{13}=\frac{3}{16}$
$\frac{9}{12}÷81=\frac{9}{12}×\frac{1}{81}=\frac{1}{108}$
$\frac{26}{27}÷52=\frac{26}{27}×\frac{1}{52}=\frac{1}{54}$
$\frac{12}{13}÷144=\frac{12}{13}×\frac{1}{144}=\frac{1}{156}$
$\frac{50}{9}÷125=\frac{50}{9}×\frac{1}{125}=\frac{2}{45}$
$\frac{32}{7}÷16=\frac{32}{7}×\frac{1}{16}=\frac{2}{7}$
$\frac{56}{9}÷21=\frac{56}{9}×\frac{1}{21}=\frac{8}{27}$
$\frac{35}{17}÷28=\frac{35}{17}×\frac{1}{28}=\frac{5}{68}$
$\frac{33}{35}÷22=\frac{33}{35}×\frac{1}{22}=\frac{3}{70}$
$\frac{17}{25}÷17=\frac{17}{25}×\frac{1}{17}=\frac{1}{25}$
$\frac{50}{51}÷5=\frac{50}{51}×\frac{1}{5}=\frac{10}{51}$

错中求解 乐乐在计算一道除法算式时，把除以6看成了乘6，得到的结果是$\frac{4}{9}$。 正确的结果应该是（）。

3. $\frac{1}{81}$