MATH CROSSWORD PUZZLE

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Across
  1. 3. The answer to a subtraction problem
  2. 5. Keeping both sides of an equation equal
  3. 7. A value that does not change
  4. 11. To replace a variable with a number
  5. 13. A number that tells how many times a base is multiplied
  6. 15. A single part of an algebraic expression
  7. 18. A number that multiplies another number
  8. 19. A letter that represents an unknown number
  9. 20. To find the value of the variable
Down
  1. 1. A number multiplied by a variable
  2. 2. The answer to a division problem
  3. 4. The answer to a multiplication problem
  4. 6. A math sentence with an equal sign
  5. 8. The answer to an addition problem
  6. 9. The number that replaces a variable
  7. 10. A branch of math that uses letters and numbers
  8. 12. Numbers variables and operations without an equal sign
  9. 14. The result of using an exponent
  10. 16. A math sentence using < > ≤ or ≥
  11. 17. A rule written using numbers and variables