Number Prefixes

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1234567891011121314151617181920212223242526272829303132
Across
  1. 3. an Olympic event for men
  2. 4. five babies born at the same time
  3. 8. a polygon with four sides
  4. 9. an insect with four legs
  5. 14. a copy
  6. 15. twice a year
  7. 17. used in math to show a fraction of a number
  8. 21. a polygon with seven sides
  9. 23. a person aged 70-79
  10. 24. 100 years
  11. 28. 1/1000 of a second
  12. 31. a polygon with five sides
  13. 32. speaking in one tone
Down
  1. 1. one
  2. 2. an insect with six legs
  3. 5. a set of three usually in movies and novels
  4. 6. a polygon with three sides
  5. 7. two people performing together
  6. 10. a person aged 80-89
  7. 11. 100 year event
  8. 12. a Greek officer in charge of 100 soldiers
  9. 13. 1000 years
  10. 16. 1/1000 of a liter
  11. 18. 1000 watts of energy
  12. 19. a group of five performers
  13. 20. sporting contest with seven events, usually for women
  14. 22. measurement for cameras on phones
  15. 25. three
  16. 26. an arthropod with ten legs
  17. 27. one million bytes of computer memory
  18. 29. an ocean animal with eight tentacles
  19. 30. 10 years