Spelling #8 (ir-/il- words)

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Across
  1. 5. the number dividing into a dividend; the number of groups in a division problem
  2. 8. not able to be replaced
  3. 11. not able to retrieve, get back
  4. 12. not able to be read as in messy writing
  5. 15. not regular
  6. 17. not relevant, not related to
  7. 18. not making sense
  8. 19. not able to be resisted, temptation
Down
  1. 1. not being true, real; not authentic
  2. 2. the number being multiplied
  3. 3. not able to revoke or take back
  4. 4. not being responsible
  5. 6. the answer to a division problem
  6. 7. not able to reverse, change
  7. 9. the number being divided in a division problem
  8. 10. not having logic; not making sense
  9. 13. the numbers being added together
  10. 14. being against the law
  11. 16. the answer to a multiplication problem
  12. 20. the answer to an addition problem