Math Puzzle

123456789101112131415161718
Across
  1. 2. space taken up by a 2-D shape
  2. 4. number in front of a variable ex:(2x)
  3. 5. solution to multiplication
  4. 7. _______ inverse a number and its inverse can be multiplied to make 1
  5. 8. numbers or variables added together
  6. 12. a fixed value
  7. 13. (0,0)
  8. 14. _____ inverse two numbers that can add to make 0
  9. 16. one of the four equal parts on a graph
  10. 17. answer to an addition problem
  11. 18. multiplication property of _______
Down
  1. 1. all sides added together
  2. 3. you can change the grouping of numbers and it wont affect the solution
  3. 6. numbers can be moved without altering the solution
  4. 9. a terminating or repeating decimal
  5. 10. a decimal that never ends or repeats
  6. 11. a point on a graph
  7. 15. ___________property of equality