Ответ:

  1. 7000 + 800 + 70 + 9 = 7879
  2. 800 + 50 + 9 = 859
  3. 9000 + 700 + 10 + 5 = 9715
  4. 60 000 + 9000 + 400 + 30 + 9 = 69 439
  5. 500 + 8 = 508
  6. 3000 + 500 + 3 = 3503
  7. 90 000 + 5000 + 20 = 95 020