一、口算。
$\frac {2}{3}÷\frac {1}{3}=$
$\frac {9}{25}÷\frac {6}{5}=$
$\frac {4}{9}÷\frac {2}{3}=$
$\frac {10}{21}÷\frac {2}{5}=$
$\frac {5}{8}÷\frac {1}{16}=$
$\frac {5}{6}÷\frac {1}{30}=$
$\frac {9}{10}÷\frac {5}{3}=$
$\frac {3}{4}÷\frac {3}{8}=$
$\frac {5}{7}÷\frac {3}{4}=$
$\frac {1}{24}÷\frac {5}{8}=$
$\frac {3}{40}÷\frac {9}{10}=$
$\frac {7}{12}÷\frac {7}{9}=$
$\frac {5}{6}÷\frac {2}{3}=$
$\frac {5}{7}÷\frac {5}{6}=$
$\frac {10}{27}÷\frac {5}{12}=$
$\frac {1}{7}÷\frac {5}{7}=$
$\frac {20}{21}÷\frac {14}{39}=$
$\frac {2}{21}÷\frac {6}{7}=$
$\frac {5}{12}÷\frac {5}{16}=$
$\frac {4}{13}÷\frac {1}{3}=$
$\frac {11}{26}÷\frac {22}{39}=$

一、2 $\frac {3}{10}$ $\frac {2}{3}$
$\frac {25}{21}$ 10 25
$\frac {27}{50}$ 2 $\frac {20}{21}$
$\frac {1}{15}$ $\frac {1}{12}$ $\frac {3}{4}$
$\frac {5}{4}$ $\frac {6}{7}$ $\frac {8}{9}$
$\frac {1}{5}$ $\frac {130}{49}$ $\frac {1}{9}$
$\frac {4}{3}$ $\frac {12}{13}$ $\frac {3}{4}$

二、在$◯$里填“＞”“＜”或“=”。
$\frac {4}{5}÷\frac {5}{4}$$\frac {4}{5}$
$\frac {7}{8}÷\frac {4}{5}$$\frac {7}{8}$
$\frac {6}{7}÷\frac {10}{9}$$\frac {6}{7}$
$\frac {10}{11}÷\frac {10}{11}$$\frac {10}{11}$
$\frac {5}{9}÷\frac {5}{8}$$\frac {5}{9}$
$\frac {7}{4}÷\frac {3}{2}$$\frac {7}{4}$
$\frac {3}{7}÷\frac {1}{9}$$\frac {3}{7}×9$
$\frac {1}{40}÷\frac {1}{50}$$\frac {1}{4}÷\frac {1}{5}$
$\frac {3}{11}÷3$$\frac {3}{11}÷\frac {1}{3}$
$\frac {1}{5}÷\frac {1}{6}$$\frac {1}{6}÷\frac {1}{7}$
$\frac {8}{9}×\frac {8}{9}$$\frac {8}{9}÷\frac {8}{9}$
$\frac {11}{10}÷\frac {12}{11}$$\frac {11}{10}×\frac {12}{11}$

二、＜ ＞ ＜
＞ ＞ ＜
= = ＜
＞ ＜ ＜