1' s
  • 1. 1 + 0 =
  • 2. 1 + 1 =
  • 3. 1 + 2 =
  • 4. 1 + 3 =
  • 5. 1 + 4 =
  • 6. 1 + 5 =
  • 7. 1 + 6 =
  • 8. 1 + 7 =
  • 9. 1 + 8 =
  • 10. 1 + 9 =
  • 11. 1 + 10 =
  • 12. 1 + 11 =
  • 13. 1 + 13 =
  • 14. 1 -1 =
  • 15. 2 -1 =
  • 16. 3 -1 =
  • 17. 4 - 1 =
  • 18. 5 -1 =
  • 19. 6 - 1 =
  • 20. 7 - 1 =
  • 21. 8 - 1 =
  • 22. 9 - 1 =
  • 23. 10 - 1
  • 24. 11 - 1=
  • 25. 12 - 1=
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