Figures and numbers

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Across
  1. 3. Space Odyssey
  2. 4. £80
  3. 7. 1:58
  4. 9. centenary of the end of WWII (year)
  5. 11. 500
  6. 12. 98,000,000,000
  7. 14. 25%
  8. 16. hundred 2500 (number)
  9. 17. French phone numbers have ten
  10. 18. 2:45
  11. 19. 6:30
  12. 20. the most important birthday in many English speaking countries
Down
  1. 1. one tenth
  2. 2. meters in a mile
  3. 5. 2,000,000
  4. 6. centimeters in an inch
  5. 8. the voting age in most countries
  6. 10. 9:10
  7. 13. 33%
  8. 15. D-Day