Ответ:

  1. \(72:8+25=9+25=34\);
  2. \(100-56:8=100-7=93\);
  3. \(32:8\cdot2=4\cdot2=8\);
  4. \((65-25):8=40:8=5\);
  5. \(64:8-8=8-8=0\);
  6. \(51-16:8=51-2=49\);
  7. \(48-24:8=48-3=45\);
  8. \(48:8+48=6+48=54\).