Контрольные задания > 1) \(\frac{3}{7} + \frac{16}{28}\) 2) \(\frac{1}{6} + \frac{5}{18}\) 3) \(\frac{5}{7} + \frac{3}{14}\) 4) \(\frac{7}{15} + \frac{3}{5}\) 5) \(\frac{7}{15} + \frac{1}{3}\) 6) \(\frac{5}{24} + \frac{7}{60}\) 7) \(\frac{4}{9} + \frac{7}{15}\) 8) \(\frac{8}{15} + \frac{11}{12}\) 9) \(\frac{7}{20} + \frac{11}{30}\) 10) \(\frac{5}{48} + \frac{17}{36}\) 11) \(\frac{10}{15} - \frac{2}{3}\) 12) \(\frac{22}{9} - \frac{7}{3}\) 13) \(\frac{4}{7} - \frac{16}{28}\) 14) \(\frac{3}{4} - \frac{1}{3}\) 15) \(\frac{9}{35} - \frac{3}{28}\) 16) \(\frac{11}{21} - \frac{2}{35}\) 17) \(\frac{5}{9} - \frac{1}{4}\) 18) \(\frac{5}{8} - \frac{2}{5}\) 19) \(\frac{19}{60} - \frac{8}{45}\) 20) \(\frac{11}{30} - \frac{16}{45}\)
Вопрос:

1) \(\frac{3}{7} + \frac{16}{28}\) 2) \(\frac{1}{6} + \frac{5}{18}\) 3) \(\frac{5}{7} + \frac{3}{14}\) 4) \(\frac{7}{15} + \frac{3}{5}\) 5) \(\frac{7}{15} + \frac{1}{3}\) 6) \(\frac{5}{24} + \frac{7}{60}\) 7) \(\frac{4}{9} + \frac{7}{15}\) 8) \(\frac{8}{15} + \frac{11}{12}\) 9) \(\frac{7}{20} + \frac{11}{30}\) 10) \(\frac{5}{48} + \frac{17}{36}\) 11) \(\frac{10}{15} - \frac{2}{3}\) 12) \(\frac{22}{9} - \frac{7}{3}\) 13) \(\frac{4}{7} - \frac{16}{28}\) 14) \(\frac{3}{4} - \frac{1}{3}\) 15) \(\frac{9}{35} - \frac{3}{28}\) 16) \(\frac{11}{21} - \frac{2}{35}\) 17) \(\frac{5}{9} - \frac{1}{4}\) 18) \(\frac{5}{8} - \frac{2}{5}\) 19) \(\frac{19}{60} - \frac{8}{45}\) 20) \(\frac{11}{30} - \frac{16}{45}\)

Смотреть решения всех заданий с листа

Ответ:

Выполним действия с дробями:

  1. $$\frac{3}{7} + \frac{16}{28} = \frac{3}{7} + \frac{4}{7} = \frac{7}{7} = 1$$
  2. $$\frac{1}{6} + \frac{5}{18} = \frac{3}{18} + \frac{5}{18} = \frac{8}{18} = \frac{4}{9}$$
  3. $$\frac{5}{7} + \frac{3}{14} = \frac{10}{14} + \frac{3}{14} = \frac{13}{14}$$
  4. $$\frac{7}{15} + \frac{3}{5} = \frac{7}{15} + \frac{9}{15} = \frac{16}{15} = 1 \frac{1}{15}$$
  5. $$\frac{7}{15} + \frac{1}{3} = \frac{7}{15} + \frac{5}{15} = \frac{12}{15} = \frac{4}{5}$$
  6. $$\frac{5}{24} + \frac{7}{60} = \frac{25}{120} + \frac{14}{120} = \frac{39}{120} = \frac{13}{40}$$
  7. $$\frac{4}{9} + \frac{7}{15} = \frac{20}{45} + \frac{21}{45} = \frac{41}{45}$$
  8. $$\frac{8}{15} + \frac{11}{12} = \frac{32}{60} + \frac{55}{60} = \frac{87}{60} = \frac{29}{20} = 1 \frac{9}{20}$$
  9. $$\frac{7}{20} + \frac{11}{30} = \frac{21}{60} + \frac{22}{60} = \frac{43}{60}$$
  10. $$\frac{5}{48} + \frac{17}{36} = \frac{15}{144} + \frac{68}{144} = \frac{83}{144}$$
  11. $$\frac{10}{15} - \frac{2}{3} = \frac{10}{15} - \frac{10}{15} = 0$$
  12. $$\frac{22}{9} - \frac{7}{3} = \frac{22}{9} - \frac{21}{9} = \frac{1}{9}$$
  13. $$\frac{4}{7} - \frac{16}{28} = \frac{16}{28} - \frac{16}{28} = 0$$
  14. $$\frac{3}{4} - \frac{1}{3} = \frac{9}{12} - \frac{4}{12} = \frac{5}{12}$$
  15. $$\frac{9}{35} - \frac{3}{28} = \frac{36}{140} - \frac{15}{140} = \frac{21}{140} = \frac{3}{20}$$
  16. $$\frac{11}{21} - \frac{2}{35} = \frac{55}{105} - \frac{6}{105} = \frac{49}{105} = \frac{7}{15}$$
  17. $$\frac{5}{9} - \frac{1}{4} = \frac{20}{36} - \frac{9}{36} = \frac{11}{36}$$
  18. $$\frac{5}{8} - \frac{2}{5} = \frac{25}{40} - \frac{16}{40} = \frac{9}{40}$$
  19. $$\frac{19}{60} - \frac{8}{45} = \frac{57}{180} - \frac{32}{180} = \frac{25}{180} = \frac{5}{36}$$
  20. $$\frac{11}{30} - \frac{16}{45} = \frac{33}{90} - \frac{32}{90} = \frac{1}{90}$$
ГДЗ по фото 📸
Подать жалобу Правообладателю