Ответ:

  1. \(8\cdot\frac{5}{40}=1\).
  2. \(\frac{10}{24}\cdot6=\frac{5}{12}\cdot6=\frac{5}{2}\).
  3. \(\frac{9}{22}\cdot44=9\cdot2=18\).

Ответ: 1) \(1\); 2) \(\frac{5}{2}\); 3) \(18\).