2. Выполните умножение устно, запишите результат: а) \(7\frac{1}{4}\cdot8\); \(5\frac{2}{3}\cdot6\); \(4\cdot1\frac{1}{2}\); \(70\cdot2\frac{1}{7}\). б) \(35\frac{2}{5}\cdot5\); \(9\cdot1\frac{1}{18}\); \(2\frac{1}{3}\cdot2\); \(18\frac{1}{4}\cdot\frac{1}{9}\). в) \(12\frac{1}{5}\cdot\frac{1}{12}\); \(80\frac{1}{5}\cdot\frac{1}{20}\); \(16\frac{1}{8}\cdot\frac{1}{4}\); \(32\frac{1}{9}\cdot\frac{1}{8}\).

а) \(7\frac{1}{4}\cdot8=58\); \(5\frac{2}{3}\cdot6=34\); \(4\cdot1\frac{1}{2}=6\); \(70\cdot2\frac{1}{7}=150\).

б) \(35\frac{2}{5}\cdot5=177\); \(9\cdot1\frac{1}{18}=9\frac{1}{2}\); \(2\frac{1}{3}\cdot2=4\frac{2}{3}\); \(18\frac{1}{4}\cdot\frac{1}{9}=2\frac{1}{48}\).

в) \(12\frac{1}{5}\cdot\frac{1}{12}=1\frac{1}{60}\); \(80\frac{1}{5}\cdot\frac{1}{20}=4\frac{1}{100}\); \(16\frac{1}{8}\cdot\frac{1}{4}=4\frac{1}{32}=4\frac{1}{32}\); \(32\frac{1}{9}\cdot\frac{1}{8}=4\frac{1}{72}\).

Ответ: а) 58; 34; 6; 150. б) 177; \(9\frac{1}{2}\); \(4\frac{2}{3}\); \(2\frac{1}{48}\). в) \(1\frac{1}{60}\); \(4\frac{1}{100}\); \(4\frac{1}{32}\); \(4\frac{1}{72}\).