Math crossword puzzle

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Across
  1. 3. value of a place
  2. 5. a short sentence
  3. 6. of operations of the order
  4. 7. expression
  5. 9. something with diferent things
  6. 10. commutation land
  7. 12. divid
  8. 14. association land
  9. 15. word or phrase
Down
  1. 1. algerbriac
  2. 2. List (include hyphens on website)
  3. 4. distribution land
  4. 8. a result obtained by dividing
  5. 11. multiply
  6. 13. thing