Prefixes and Roman Numerals

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Across
  1. 4. Which prefix has the same meaning as circum?
  2. 5. Iso and ___ have the same meaning
  3. 6. The prefix pro means both in front of and ___?
  4. 8. Which prefix has the same meaning as omni?
  5. 11. What is the value of the Roman numeral C?
  6. 14. What does XL translate to in Arabic numbers?
  7. 16. September should be which month of the year?
  8. 17. I is the Roman numeral for what number?
  9. 19. Which kind of numbers represent quantity?
Down
  1. 1. Non is an example of a ___ prefix
  2. 2. Which Greek prefix means before?
  3. 3. What is the value of the Roman numeral M?
  4. 7. Which kind of numbers represent positions on a list?
  5. 9. Poly and ___ have the same meaning
  6. 10. Which prefix means down?
  7. 12. Which cardinal number means two?
  8. 13. Which prefix means back?
  9. 15. What is the maximum amount of times a Roman numeral can be written together?
  10. 18. What does the prefix neo mean?
  11. 20. How is four written in Roman numerals?