Ответ:

  1. \(55:5=11\);
  2. \(96:3=32\);
  3. \(78:6=13\);
  4. \(54:18=3\);
  5. \(57:19=3\);
  6. \(63:3=21\);
  7. \(38\cdot2=76\);
  8. \(19\cdot3=57\);
  9. \(32\cdot3=96\).