Ответ:

  1. 13 + 6 = 19
  2. 81 + 5 = 86
  3. 42 + 6 = 48
  4. 30 + 24 = 30 + 20 + 4 = 54
  5. 53 + 10 = 63
  6. 65 + 30 = 95
  7. 4 + 73 = 77
  8. 20 + 73 = 93