Riley's Algebra Puzzle

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Across
  1. 1. the opposite operation of multiplication
  2. 6. the distance of a number from zero
  3. 8. the result of subtracting two numbers
  4. 10. a set that contains no elements
  5. 13. a mathematical statement that says that two expressions have the same value
  6. 15. a number that indicates the operation of repeated multiplication
  7. 16. the result of adding
  8. 17. one of two or more expressions that are multiplied together
  9. 19. a mathematical statement that says that two expressions have the same value
Down
  1. 2. a symbol used to represent a value
  2. 3. a constant that multiplies a variable
  3. 4. the union of the set of rational numbers and irrational numbers
  4. 5. the answer to a division problem
  5. 7. a well defined group of objects.
  6. 9. the set of numbers containing zero, the natural numbers, and all the negatives of the natural numbers
  7. 11. the result of two numbers being multiplied
  8. 12. a member of a set
  9. 14. a value that does not change
  10. 18. a number that indicates the operation of repeated multiplication
  11. 20. the intersection of two sets