Ответ:

  1. \(436+259=695\);
  2. \(73\,569+1=73\,570\);
  3. \(680\cdot1000=680\,000\);
  4. \(792-456=336\);
  5. \(30\,000-1=29\,999\);
  6. \(95\,800:100=958\);
  7. \(828:3=276\);
  8. \(709\,318-300=709\,018\);
  9. \(138\,000+45=138\,045\).