Ответ:

  1. \(70-24=46\)
  2. \(100-36=64\)
  3. \(84-30=54\)
  4. \(60-43=17\)
  5. \(90-64=26\)
  6. \(50-9=41\)
  7. \(42-18=24\)
  8. \(50-35=15\)
  9. \(100-57=43\)
  10. \(65-30=35\)
  11. \(47+4=51\)
  12. \(76+8=84\)
  13. \(58+37=95\)
  14. \(38+35=73\)
  15. \(25+47=72\)