Заполняем таблицу умножения и деления, представленную на листе.
Далее решаем примеры:
\( \frac{4}{12} : \frac{5}{6} = \frac{4}{12} \times \frac{6}{5} = \frac{24}{60} = \frac{2}{5} \)
\( 3 + \frac{3}{7} = \frac{21}{7} + \frac{3}{7} = \frac{24}{7} \)
\( \frac{2}{8} + \frac{3}{5} = \frac{1}{4} + \frac{3}{5} = \frac{5}{20} + \frac{12}{20} = \frac{17}{20} \)
\( \frac{7}{8} + \frac{7}{4} = \frac{7}{8} + \frac{14}{8} = \frac{21}{8} \)
\( \frac{1}{2} + \frac{3}{5} = \frac{5}{10} + \frac{6}{10} = \frac{11}{10} \)
\( \frac{1}{4} + \frac{7}{15} = \frac{15}{60} + \frac{28}{60} = \frac{43}{60} \)
\( \frac{1}{5} + \frac{5}{12} = \frac{12}{60} + \frac{25}{60} = \frac{37}{60} \)
\( \frac{3}{4} + 6 = \frac{3}{4} + \frac{24}{4} = \frac{27}{4} \)
\( \frac{2}{5} + \frac{3}{10} = \frac{4}{10} + \frac{3}{10} = \frac{7}{10} \)
\( \frac{1}{2} + \frac{1}{18} = \frac{9}{18} + \frac{1}{18} = \frac{10}{18} = \frac{5}{9} \)
\( 3 + \frac{1}{2} = \frac{6}{2} + \frac{1}{2} = \frac{7}{2} \)
\( \frac{2}{3} + \frac{4}{7} = \frac{14}{21} + \frac{12}{21} = \frac{26}{21} \)
\( \frac{3}{11} + \frac{6}{7} = \frac{21}{77} + \frac{66}{77} = \frac{87}{77} \)
\( \frac{9}{10} + \frac{2}{3} = \frac{27}{30} + \frac{20}{30} = \frac{47}{30} \)
Ответ: Решения приведены выше для каждого примера.