1. 直接写出得数。
实际用时：分钟
$\frac{5}{4}×\frac{4}{5}=$
$\frac{5}{3}-\frac{3}{8}=$
$\frac{5}{4}-\frac{5}{6}-\frac{1}{6}=$
$25×\frac{1}{12}÷\frac{5}{4}=$
$\frac{7}{6}+\frac{5}{6}=$
$24÷\frac{12}{7}=$
$\frac{5}{8}×\frac{7}{3}×\frac{16}{5}=$
$\frac{15}{16}+\frac{3}{4}+\frac{1}{16}=$
$\frac{5}{11}÷\frac{3}{4}=$
$\frac{2}{3}+\frac{5}{12}=$
$\frac{7}{5}×(1-\frac{2}{7})=$
$\frac{7}{5}-\frac{1}{5}×5=$
$\frac{11}{12}×6=$
$\frac{9}{14}-\frac{5}{28}=$
$\frac{32}{15}÷\frac{8}{15}×\frac{3}{11}=$
$\frac{1}{3}×\frac{4}{3}÷2=$
$\frac{9}{13}÷\frac{1}{2}=$
$\frac{7}{12}+\frac{5}{6}=$
$16÷\frac{4}{5}÷\frac{4}{3}=$
$\frac{1}{5}+\frac{5}{8}+\frac{4}{5}=$
$\frac{7}{8}-\frac{3}{32}=$
$\frac{7}{3}×\frac{6}{7}=$
$\frac{9}{10}-\frac{2}{5}+\frac{1}{10}=$
$\frac{7}{24}×\frac{4}{3}×3=$

1. $1$　$\frac{31}{24}$　$\frac{1}{4}$　$\frac{5}{3}$
$2$　$14$　$\frac{14}{3}$　$\frac{7}{4}$
$\frac{20}{33}$　$\frac{13}{12}$　$1$　$\frac{2}{5}$
$\frac{11}{2}$　$\frac{13}{28}$　$\frac{12}{11}$　$\frac{2}{9}$
$\frac{18}{13}$　$\frac{17}{12}$　$15$　$\frac{13}{8}$
$\frac{25}{32}$　$2$　$\frac{3}{5}$　$\frac{7}{6}$

2. 计算下面各题。
$50.24÷ 3.14÷ ( \frac{1}{2} - \frac{1}{6} )$
$\frac{9}{23}÷ [ \frac{1}{3}× ( \frac{4}{11} + \frac{5}{11} ) ]$
$\frac{2}{5}× [ \frac{11}{21}÷ ( \frac{4}{7} - \frac{2}{9} ) ]$

2. $48$　$\frac{33}{23}$　$\frac{3}{5}$

3. 在$◯$里填上“＞”“＜”或“=”。
$1÷\frac{5}{12} ◯ \frac{5}{12}÷1$
$\frac{5}{6}+\frac{5}{6} ◯ \frac{5}{6}÷\frac{1}{2}$
$\frac{3}{4}÷(1+\frac{1}{8}) ◯ \frac{3}{4}×(1+\frac{1}{8})$
$\frac{7}{8}÷(1+\frac{1}{7}) ◯ \frac{7}{8}+\frac{7}{8}÷\frac{1}{7}$
$\frac{5}{6}÷(1-\frac{2}{3}) ◯ \frac{5}{6}×(1-\frac{2}{3})$
$\frac{3}{5}÷(1-\frac{1}{10}) ◯ \frac{2}{9}÷(1-\frac{1}{10})$

3. $＞$　$=$　$＜$　$＜$　$＞$　$＞$

计算: $(1+\dfrac{1}{2})×(1+\dfrac{1}{3})×(1+\dfrac{1}{4})×···×(1+\dfrac{1}{99})×(1+\dfrac{1}{100})$

【思维提升】$\frac{101}{2}$