Numbers

1234567891011121314151617181920
Across
  1. 2. First counting number
  2. 6. Number after thirteen
  3. 8. Number after four
  4. 9. Number after one
  5. 11. Number after two
  6. 13. Number after seventeen
  7. 16. Number after twelve
  8. 18. Number after six
  9. 19. Number after nineteen
  10. 20. Number after fifteen
Down
  1. 1. Number after three
  2. 3. Number after eighteen
  3. 4. Number after seven
  4. 5. Number after sixteen
  5. 7. Number after ten
  6. 10. Number after eleven
  7. 12. Number after five
  8. 14. Number after eight
  9. 15. Number after fourteen
  10. 17. Number after nine