math puzzle

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Across
  1. 8. property
  2. 11. P.E.M.D.A.S.
  3. 12. the answer to a division question
  4. 13. a phrase used to describe something
Down
  1. 1. a mathematical question only involving numbers
  2. 2. the number value that a digit owns
  3. 3. expression
  4. 4. multiply
  5. 5. the answer to an addition problem
  6. 6. property
  7. 7. property
  8. 9. the vary to change something
  9. 10. divide