1. 直接写出得数。
实际用时：分钟
$\frac{13}{16}+\frac{3}{16}=$
$27÷\frac{9}{10}=$
$18÷\frac{9}{20}=$
$20÷\frac{5}{6}=$
$\frac{3}{16}×4=$
$1÷\frac{1}{15}=$
$\frac{8}{11}÷\frac{8}{5}=$
$\frac{7}{8}÷\frac{1}{16}=$
$\frac{20}{11}×\frac{1}{10}=$
$\frac{5}{8}÷\frac{3}{4}=$
$3÷\frac{9}{11}=$
$12÷\frac{3}{4}=$
$\frac{9}{10}÷0.3=$
$\frac{21}{22}÷14=$
$\frac{12}{13}÷\frac{3}{4}=$
$10÷\frac{5}{7}=$
$\frac{5}{6}+\frac{7}{6}=$
$\frac{5}{9}×\frac{3}{25}=$
$\frac{16}{3}÷\frac{2}{3}=$
$\frac{1}{2}÷\frac{2}{5}=$
$\frac{1}{8}×\frac{3}{7}=$
$\frac{4}{5}÷\frac{5}{4}=$
$21÷\frac{7}{24}=$
$\frac{4}{5}-\frac{1}{2}=$
$\frac{5}{6}÷\frac{5}{9}=$
$750÷25=$
$\frac{1}{12}÷\frac{5}{8}=$
$\frac{5}{6}+\frac{4}{9}=$
$\frac{3}{5}×\frac{2}{9}=$
$32÷\frac{2}{5}=$
$\frac{5}{6}÷\frac{10}{9}=$
$\frac{4}{9}×18=$
$\frac{5}{8}-\frac{1}{10}=$
$\frac{8}{7}÷\frac{4}{7}=$
$\frac{9}{4}÷\frac{3}{8}=$
$\frac{9}{4}÷\frac{3}{4}=$
$0.5÷\frac{1}{4}=$
$17÷\frac{51}{50}=$
$16÷\frac{4}{13}=$
$\frac{10}{21}×\frac{7}{15}=$

1. $1$ $30$ $40$ $24$
$\frac{3}{4}$ $15$ $\frac{5}{11}$ $14$
$\frac{2}{11}$ $\frac{5}{6}$ $\frac{11}{3}$ $16$
$3$ $\frac{3}{44}$ $\frac{16}{13}$ $14$
$2$ $\frac{1}{15}$ $8$ $\frac{5}{4}$
$\frac{3}{56}$ $\frac{16}{25}$ $72$ $\frac{3}{10}$
$\frac{3}{2}$ $30$ $\frac{2}{15}$ $\frac{23}{18}$
$\frac{2}{15}$ $80$ $\frac{3}{4}$ $8$
$\frac{21}{40}$ $2$ $6$ $3$
$2$ $\frac{50}{3}$ $52$ $\frac{2}{9}$

2. 计算下面各题。
$\frac{13}{18} - ( \frac{1}{6} - \frac{1}{9} )$
$\frac{1}{3} + \frac{5}{6} + \frac{7}{18}$
$\frac{7}{8} - ( \frac{9}{16} - \frac{1}{8} )$
$\frac{3}{5} + \frac{2}{5} - \frac{6}{7}$
$\frac{7}{9} - ( \frac{2}{3} + \frac{1}{9} )$
$\frac{13}{18} + ( \frac{2}{3} - \frac{1}{2} )$

2. $\frac{2}{3}$ $\frac{14}{9}$ $\frac{7}{16}$
$\frac{1}{7}$ $0$ $\frac{8}{9}$