Ответ:

  1. \(25\,000+25=25\,025\).
  2. \(18\,000+350=18\,350\).
  3. \(37\,000+480=37\,480\).
  4. \(7\,050-7\,000=50\).
  5. \(6\,080-6\,000=80\).
  6. \(8\,040-8\,040=0\).
  7. \(69\,875-800-70=69\,075-70=69\,005\).
  8. \(43\,546-40\,000-40=3\,546-40=3\,506\).
  9. \(93\,648-3\,000-8=90\,648-8=90\,640\).

Ответ: 25 025; 18 350; 37 480; 50; 80; 0; 69 005; 3 506; 90 640.