This is Why The Decimal System is Better

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12345678910111213141516171819
Across
  1. 4. first (Greek)
  2. 6. one (Greek)
  3. 7. tenth (Latin)
  4. 10. ninth (Latin)
  5. 11. four (Greek)
  6. 14. Romaan numeral for 1885
  7. 16. second (Greek)
  8. 18. single, alone (Latin)
  9. 19. twice (Latin)
Down
  1. 1. 1000 (Greek)
  2. 2. Coolest crossword maker (initials of GG)
  3. 3. two (Greek)
  4. 5. three (Greek)
  5. 6. half (Greek)
  6. 8. nine (Greek)
  7. 9. 100 (Greek)
  8. 10. nine (Latin)
  9. 12. both (Latin)
  10. 13. Roman numeral for 569
  11. 15. half (Latin)
  12. 17. one (Latin)
  13. 18. one and a half (Latin)