(1) $\frac{1}{2} + \frac{1}{3} = \rule{2cm}{0.15mm}$
(2) $\frac{5}{6} - \frac{1}{4} = \rule{2cm}{0.15mm}$
(3) $\frac{3}{8} + \frac{2}{5} = \rule{2cm}{0.15mm}$
(4) $\frac{7}{10} - \frac{1}{6} = \rule{2cm}{0.15mm}$
(5) $\frac{2}{9} + \frac{4}{7} = \rule{2cm}{0.15mm}$
(6) $\frac{11}{12} - \frac{3}{8} = \rule{2cm}{0.15mm}$
(7) $1\frac{1}{4} + \frac{2}{3} = \rule{2cm}{0.15mm}$
(8) $2\frac{3}{5} - 1\frac{1}{2} = \rule{2cm}{0.15mm}$
(9) $\frac{5}{6} + \frac{3}{4} - \frac{7}{12} = \rule{2cm}{0.15mm}$
(10) $\frac{9}{14} + \frac{5}{21} - \frac{1}{7} = \rule{2cm}{0.15mm}$