Контрольные задания
Вопрос:Фото задания: Вычислите: 1 1/3 + 1/3; 2 9/11 − 1 2/11; 8 − 6 5/7; 3 8/17 + 1 7/17; 7 − 7/11; 4 5/13 − 2 2/13; 4/7 + 3/7; 7/9 + 2 2/9; 1 −…Фото задания

Ответ:

  1. \(1\frac{1}{3}+\frac{1}{3}=1\frac{2}{3}\).
  2. \(2\frac{9}{11}-1\frac{2}{11}=1\frac{7}{11}\).
  3. \(8-6\frac{5}{7}=1\frac{2}{7}\).
  4. \(3\frac{8}{17}+1\frac{7}{17}=5\).
  5. \(7-\frac{7}{11}=6\frac{4}{11}\).
  6. \(4\frac{5}{13}-2\frac{2}{13}=2\frac{3}{13}\).
  7. \(\frac{4}{7}+\frac{3}{7}=1\).
  8. \(\frac{7}{9}+2\frac{2}{9}=3\).
  9. \(1-\frac{2}{5}=\frac{3}{5}\).
  10. \(3\frac{2}{7}+5\frac{4}{7}=8\frac{6}{7}\).
  11. \(\frac{3}{8}+3=3\frac{3}{8}\).
  12. \(3-\frac{2}{7}=2\frac{5}{7}\).
  13. \(\frac{8}{11}+\frac{7}{11}=1\frac{4}{11}\).
  14. \(9-6\frac{2}{9}=2\frac{7}{9}\).
  15. \(13\frac{7}{15}-7=6\frac{7}{15}\).