Ответ:

  1. \(42+51=93\);
  2. \(62+29=91\);
  3. \(35\cdot2=70\);
  4. \(85-57=28\);
  5. \(96-38=58\);
  6. \(12\cdot6=72\);
  7. \(63:21=3\);
  8. \(76:4=19\).

Ответ: 93; 91; 70; 28; 58; 72; 3; 19.