2. Вычислите: 1) 5 · 3/16; 2) 18 · 4/9; 3) 13/27 · 3; 4) 11/40 · 16.

1. \(5\cdot\frac{3}{16}=\frac{15}{16}\).
2. \(18\cdot\frac{4}{9}=2\cdot4=8\).
3. \(\frac{13}{27}\cdot3=\frac{13}{9}=1\frac{4}{9}\).
4. \(\frac{11}{40}\cdot16=\frac{11\cdot2}{5}=\frac{22}{5}=4\frac{2}{5}\).

Ответ: 1) \(\frac{15}{16}\); 2) \(8\); 3) \(1\frac{4}{9}\); 4) \(4\frac{2}{5}\).