Variable Crossword

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Across
  1. 4. 6+n means "6_____ by a number"
  2. 5. n-9 means "9____ than a number"
  3. 9. 2n means "2___ by a number"
  4. 12. Operations inside ____ are done first
  5. 13. n-9 means "9_____ from a number"
  6. 14. 4 squared
  7. 15. 2 cubed
Down
  1. 1. 2/5 means "2 _____ by 5"
  2. 2. n-9 means "a number ______ by 9"
  3. 3. 3x+1 means "1 ______ than 3 times a number"
  4. 6. 4 to the 3rd power
  5. 7. When you have many operations in a problem, never perform addition before ______ or division
  6. 8. 3 squared
  7. 10. n-9 is read as "a number ____ 9"
  8. 11. n-9 means "the ___ between a number and 9"