math words

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Across
  1. 5. ¼ of a graph
  2. 7. outside
  3. 9. the integer only! (two words)
  4. 10. a hole number
  5. 11. will never touch
  6. 14. slide
  7. 16. middle of the grid
  8. 17. up
  9. 19. only changes place(two words)
  10. 20. a point
Down
  1. 1. little number on the side of a integers
  2. 2. down
  3. 3. crossing lines
  4. 4. flip
  5. 6. around
  6. 8. a point in a shape
  7. 12. a letter that can be any number
  8. 13. point in which 2 lines converge
  9. 15. order of operations
  10. 18. inside