1. $\frac{4}{5} + \left(-\frac{1}{5}\right) = \frac{4}{5} - \frac{1}{5} = \frac{3}{5}$
2. $\frac{3}{8} - \frac{5}{8} = -\frac{2}{8} = -\frac{1}{4}$
3. $\frac{2}{9} - \left(-\frac{1}{9}\right) = \frac{2}{9} + \frac{1}{9} = \frac{3}{9} = \frac{1}{3}$
4. $-\frac{7}{12} + \frac{5}{12} = -\frac{2}{12} = -\frac{1}{6}$
5. $-\frac{7}{15} - \frac{11}{15} = -\frac{18}{15} = -\frac{6}{5}$
6. $-\frac{7}{9} - \left(-\frac{6}{7}\right) = -\frac{7}{9} + \frac{6}{7} = \frac{-49 + 54}{63} = \frac{5}{63}$
7. $\frac{3}{4} + \left(-\frac{1}{2}\right) = \frac{3}{4} - \frac{1}{2} = \frac{3}{4} - \frac{2}{4} = \frac{1}{4}$
8. $-\frac{5}{6} - \left(-\frac{2}{3}\right) = -\frac{5}{6} + \frac{2}{3} = -\frac{5}{6} + \frac{4}{6} = -\frac{1}{6}$
9. $-\frac{3}{5} + \frac{3}{10} = -\frac{6}{10} + \frac{3}{10} = -\frac{3}{10}$
10. $\frac{5}{6} - \left(-\frac{3}{4}\right) = \frac{5}{6} + \frac{3}{4} = \frac{10}{12} + \frac{9}{12} = \frac{19}{12}$
11. $-\frac{1}{2} + \left(-\frac{2}{3}\right) = -\frac{1}{2} - \frac{2}{3} = -\frac{3}{6} - \frac{4}{6} = -\frac{7}{6}$
12. $\frac{3}{5} + \frac{5}{6} = \frac{18}{30} + \frac{25}{30} = \frac{43}{30}$
13. $\frac{1}{2} + \left(-\frac{5}{6}\right) = \frac{1}{2} - \frac{5}{6} = \frac{3}{6} - \frac{5}{6} = -\frac{2}{6} = -\frac{1}{3}$
14. $-\frac{3}{10} - \left(-\frac{3}{2}\right) = -\frac{3}{10} + \frac{3}{2} = -\frac{3}{10} + \frac{15}{10} = \frac{12}{10} = \frac{6}{5}$
15. $-\frac{2}{9} + \frac{5}{12} = -\frac{8}{36} + \frac{15}{36} = \frac{7}{36}$
Parent Tip: Review the logic above to help your child master the concept of adding positive and negative decimals worksheet.
