Math worksheet for practicing addition and subtraction of fractions with unlike denominators.

1. $\frac{4}{3} + \frac{2}{5} = \frac{26}{15}$
2. $\frac{7}{10} - \frac{2}{5} = \frac{3}{10}$
3. $\frac{5}{9} + \frac{2}{7} = \frac{53}{63}$
4. $\frac{4}{8} - \frac{1}{4} = \frac{1}{4}$
5. $\frac{3}{9} + \frac{1}{3} = \frac{2}{3}$
6. $\frac{2}{5} + \frac{1}{10} = \frac{1}{2}$
7. $\frac{4}{5} + \frac{9}{10} = \frac{17}{10}$
8. $\frac{4}{6} - \frac{1}{3} = \frac{1}{3}$
9. $\frac{3}{12} + \frac{2}{4} = \frac{3}{4}$
10. $\frac{5}{12} - \frac{1}{6} = \frac{1}{4}$
11. $\frac{2}{8} + \frac{3}{9} = \frac{7}{12}$
12. $\frac{1}{4} - \frac{1}{8} = \frac{1}{8}$
13. $\frac{6}{7} + \frac{2}{6} = \frac{25}{21}$
14. $\frac{1}{3} - \frac{1}{7} = \frac{4}{21}$
15. $\frac{7}{8} + \frac{4}{5} = \frac{67}{40}$