Ответ:

  1. \(20+36-40=56-40=16\);
  2. \(40+50-67=90-67=23\);
  3. \(30+18-20=48-20=28\);
  4. \(90-(80-60)=90-20=70\);
  5. \(70-(32+8)=70-40=30\);
  6. \(60-(47-7)=60-40=20\);
  7. \(75+25-9=100-9=91\);
  8. \(83+17-5=100-5=95\);
  9. \(64+36-8=100-8=92\).

Ответ: 16; 23; 28; 70; 30; 20; 91; 95; 92.