Ответ:

  1. \((17 - 8) · 2 = 9 · 2 = 18\)
  2. \((21 - 6) : 3 = 15 : 3 = 5\)
  3. \(18 : 6 · 3 = 3 · 3 = 9\)
  4. \(8 · 3 - 5 = 24 - 5 = 19\)
  5. \(82 - 66 = 16\)
  6. \(49 + 26 = 75\)
  7. \(28 + 11 = 39\)
  8. \(94 - 50 = 44\)

Ответ: 18; 5; 9; 19; 16; 75; 39; 44.