Ответ:

  1. \(63\cdot7-63\,000:1000=441-63=378\);
  2. \((250+50):5+100=300:5+100=160\);
  3. \(52\cdot9-46\,800:900=468-52=416\);
  4. \((128+272)\cdot2-50=400\cdot2-50=750\);
  5. \(240\cdot3-36\,000:600=720-60=660\);
  6. \((300+150):10+47=450:10+47=92\);
  7. \(95\cdot4-8000:200=380-40=340\);
  8. \((84+116)\cdot5-100=200\cdot5-100=900\);
  9. \(47\cdot6-65\,000:500=282-130=152\);
  10. \((165+215)\cdot13-35=380\cdot13-35=4900-35=4865\);
  11. \((475+201):2-192=676:2-192=146\);
  12. \(51\cdot8-51\,000:300=408-170=238\).