Cardinal and ordinal numbers

123456789101112131415161718
Across
  1. 2. 3rd
  2. 4. 8
  3. 6. 77
  4. 8. 25
  5. 10. 36
  6. 12. 59
  7. 13. 51st
  8. 15. 2nd
  9. 17. 48
  10. 18. 13
Down
  1. 1. 84
  2. 3. 11th
  3. 5. 73rd
  4. 7. 64th
  5. 9. 86th
  6. 11. 91
  7. 14. 62
  8. 16. 1st