Ordinal numbers

123456789101112
Across
  1. 4. 1st
  2. 7. 12th
  3. 9. 10th
  4. 10. 100th
  5. 11. 3rd
  6. 12. 5th
Down
  1. 1. 40th
  2. 2. 19th
  3. 3. 90th
  4. 5. 7th
  5. 6. 2nd
  6. 8. 18th