26. Найди значение суммы или разности.

Для сложения или вычитания дробей с разными знаменателями их нужно привести к общему знаменателю. **Столбец А** 1. $\frac{1}{3} + \frac{1}{6} = \frac{2}{6} + \frac{1}{6} = \frac{3}{6} = \frac{1}{2}$ 2. $\frac{1}{2} + \frac{1}{3} = \frac{3}{6} + \frac{2}{6} = \frac{5}{6}$ 3. $\frac{3}{5} - \frac{1}{10} = \frac{6}{10} - \frac{1}{10} = \frac{5}{10} = \frac{1}{2}$ 4. $\frac{1}{12} + \frac{5}{6} = \frac{1}{12} + \frac{10}{12} = \frac{11}{12}$ 5. $\frac{1}{3} + \frac{1}{4} = \frac{4}{12} + \frac{3}{12} = \frac{7}{12}$ 6. $\frac{1}{3} + \frac{2}{5} = \frac{5}{15} + \frac{6}{15} = \frac{11}{15}$ 7. $\frac{1}{2} - \frac{1}{4} = \frac{2}{4} - \frac{1}{4} = \frac{1}{4}$ 8. $\frac{8}{7} - 1 = \frac{8}{7} - \frac{7}{7} = \frac{1}{7}$ 9. $\frac{1}{4} - \frac{1}{5} = \frac{5}{20} - \frac{4}{20} = \frac{1}{20}$ 10. $\frac{1}{2} - \frac{3}{7} = \frac{7}{14} - \frac{6}{14} = \frac{1}{14}$ 11. $\frac{3}{4} - \frac{1}{8} = \frac{6}{8} - \frac{1}{8} = \frac{5}{8}$ 12. $\frac{1}{5} + \frac{5}{6} = \frac{6}{30} + \frac{25}{30} = \frac{31}{30} = 1\frac{1}{30}$ 13. $\frac{4}{15} + \frac{2}{5} = \frac{4}{15} + \frac{6}{15} = \frac{10}{15} = \frac{2}{3}$ 14. $\frac{7}{10} - \frac{1}{2} = \frac{7}{10} - \frac{5}{10} = \frac{2}{10} = \frac{1}{5}$ 15. $\frac{1}{3} - \frac{1}{4} = \frac{4}{12} - \frac{3}{12} = \frac{1}{12}$ **Столбец Б** 1. $\frac{1}{3} - \frac{1}{6} = \frac{2}{6} - \frac{1}{6} = \frac{1}{6}$ 2. $\frac{3}{20} + \frac{3}{4} = \frac{3}{20} + \frac{15}{20} = \frac{18}{20} = \frac{9}{10}$ 3. $\frac{7}{9} - \frac{2}{3} = \frac{7}{9} - \frac{6}{9} = \frac{1}{9}$ 4. $\frac{1}{4} + \frac{1}{5} = \frac{5}{20} + \frac{4}{20} = \frac{9}{20}$ 5. $\frac{2}{5} + \frac{4}{15} = \frac{6}{15} + \frac{4}{15} = \frac{10}{15} = \frac{2}{3}$ 6. $\frac{1}{3} + \frac{3}{4} = \frac{4}{12} + \frac{9}{12} = \frac{13}{12} = 1\frac{1}{12}$ 7. $\frac{2}{3} - \frac{2}{5} = \frac{10}{15} - \frac{6}{15} = \frac{4}{15}$ 8. $\frac{1}{5} + \frac{1}{6} = \frac{6}{30} + \frac{5}{30} = \frac{11}{30}$ 9. $\frac{1}{2} + \frac{1}{4} = \frac{2}{4} + \frac{1}{4} = \frac{3}{4}$ 10. $\frac{7}{6} - 1 = \frac{7}{6} - \frac{6}{6} = \frac{1}{6}$ 11. $\frac{1}{2} + \frac{2}{7} = \frac{7}{14} + \frac{4}{14} = \frac{11}{14}$ 12. $\frac{1}{2} - \frac{1}{3} = \frac{3}{6} - \frac{2}{6} = \frac{1}{6}$ 13. $\frac{3}{4} - \frac{1}{8} = \frac{6}{8} - \frac{1}{8} = \frac{5}{8}$ 14. $\frac{5}{6} - \frac{7}{12} = \frac{10}{12} - \frac{7}{12} = \frac{3}{12} = \frac{1}{4}$ 15. $\frac{2}{5} + \frac{3}{10} = \frac{4}{10} + \frac{3}{10} = \frac{7}{10}$ **Столбец В** 1. $\frac{11}{20} - \frac{5}{12} = \frac{33}{60} - \frac{25}{60} = \frac{8}{60} = \frac{2}{15}$ 2. $\frac{8}{9} + \frac{7}{54} = \frac{48}{54} + \frac{7}{54} = \frac{55}{54} = 1\frac{1}{54}$ 3. $\frac{5}{6} - \frac{17}{21} = \frac{35}{42} - \frac{34}{42} = \frac{1}{42}$ 4. $\frac{3}{16} + \frac{1}{24} = \frac{9}{48} + \frac{2}{48} = \frac{11}{48}$ 5. $\frac{5}{6} - \frac{22}{27} = \frac{45}{54} - \frac{44}{54} = \frac{1}{54}$ 6. $\frac{7}{25} - \frac{4}{15} = \frac{21}{75} - \frac{20}{75} = \frac{1}{75}$ 7. $\frac{3}{10} + \frac{1}{6} = \frac{9}{30} + \frac{5}{30} = \frac{14}{30} = \frac{7}{15}$ 8. $\frac{2}{5} - \frac{11}{30} = \frac{12}{30} - \frac{11}{30} = \frac{1}{30}$ 9. $\frac{3}{8} + \frac{7}{20} = \frac{15}{40} + \frac{14}{40} = \frac{29}{40}$ 10. $\frac{1}{6} + \frac{1}{7} = \frac{7}{42} + \frac{6}{42} = \frac{13}{42}$ 11. $\frac{5}{9} + \frac{7}{15} = \frac{25}{45} + \frac{21}{45} = \frac{46}{45} = 1\frac{1}{45}$ 12. $\frac{3}{8} + \frac{19}{56} = \frac{21}{56} + \frac{19}{56} = \frac{40}{56} = \frac{5}{7}$ 13. $\frac{19}{45} - \frac{7}{18} = \frac{38}{90} - \frac{35}{90} = \frac{3}{90} = \frac{1}{30}$ 14. $\frac{1}{4} + \frac{1}{8} = \frac{2}{8} + \frac{1}{8} = \frac{3}{8}$ 15. $\frac{11}{14} + \frac{8}{21} = \frac{33}{42} + \frac{16}{42} = \frac{49}{42} = \frac{7}{6} = 1\frac{1}{6}$