Ответ:

  1. 13 + 26 = 39.
  2. 475 + 312 = 787.
  3. 1742 + 8251 = 9993.
  4. 36 894 + 913 = 37 807.
  5. 6 017 + 71 999 = 78 016.
  6. 4570 + 9206 = 13 776.