Numbers 0-20

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