Ответ:

  1. 8,54 + 3,6 = 8,54 + 3,60 = 12,14.
  2. 18,2 − 15,35 = 18,20 − 15,35 = 2,85.
  3. 3,02 · 7,5 = 22,65.
  4. 4,41 : 6,3 = 44,1 : 63 = 0,7.
  5. \(\frac{1}{2}+\frac{1}{3}=\frac{3}{6}+\frac{2}{6}=\frac{5}{6}\).
  6. \(12\frac{3}{8}-8\frac{1}{6}=12\frac{9}{24}-8\frac{4}{24}=4\frac{5}{24}\).
  7. \(\frac{24}{65}\cdot\frac{39}{40}=\frac{3}{5}\cdot\frac{3}{5}=\frac{9}{25}\).
  8. \(1\frac{3}{5}:5\frac{1}{3}=\frac{8}{5}:\frac{16}{3}=\frac{8}{5}\cdot\frac{3}{16}=\frac{3}{10}\).