Smart math

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Across
  1. 2. splitting numbers apart from the other
  2. 5. an answer obtained by multiplying two quantities together
  3. 8. a line segment through a vertex and perpendicular to a line containing the base.
  4. 9. the number on the bottom for a fraction
  5. 10. 3.14
  6. 15. Combining numbers together
  7. 16. the area of variation between upper and lower limits on a particular scale
  8. 18. a result obtained by dividing one quantity by another
  9. 19. one part in every hundred
Down
  1. 1. the point where the y and x axis intersect at 0,0
  2. 3. the number on top for a fraction
  3. 4. A number over a number,can be simplified sometimes
  4. 6. Takes away numbers
  5. 7. Joins numbers together
  6. 10. can be divided evenly by itself and 1, is larger than 1
  7. 11. path that surrounds a two dimensional shape
  8. 12. portable electronic device used to perform mathematics
  9. 13. amount of space that an object occupies
  10. 14. the measurement of a surface
  11. 17. the result of adding two numbers together