Cross Factorial Puzzle Solo (Thales)

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Across
  1. 3. 9!/4!
  2. 4. if the 6! Increase in the 9!, what is the total?
  3. 10. what is the decrease of 10! and 9!?
  4. 11. what is the sum of 8! and 6!?
  5. 13. Add the 7! and 6!
  6. 14. 9!/3!
  7. 17. if add the 7! and 8!, what answer did you get?
  8. 19. what is the sum of 10! and 8!?
Down
  1. 1. 8!/2!
  2. 2. what is the difference 9! and 8!?
  3. 5. multiply 6! and 7!
  4. 6. what is the product 2! and 8!?
  5. 7. Subtract 8! and 7!
  6. 8. multiply the 6! By itself
  7. 9. 7!/3!
  8. 10. subtract 9! and 7!
  9. 12. 10!/5!
  10. 15. subtract 7! and 6!
  11. 16. What is the product 1! and 10!?
  12. 18. multiply 3! and 7!