6th grade math and more!

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Across
  1. 4. quadrilateral with 1 pair of parallel sides.
  2. 6. per 100.
  3. 9. middle number.
  4. 11. math teacher
  5. 12. the product of j and k
  6. 14. Man's best friend
  7. 15. add, subtract, multiply, and divide.
  8. 16. Flying mammal
  9. 17. answer to division.
  10. 20. answer to multiplication.
  11. 21. a pattern created with polygons
Down
  1. 1. most common number.
  2. 2. Likes to chase mice
  3. 3. the difference of the high and low.
  4. 5. quadrilateral with 4 right angles.
  5. 7. comparing things
  6. 8. distance from top to bottom.
  7. 10. Has a trunk
  8. 13. Large marsupial
  9. 18. Has a trunk
  10. 19. 2, 3, 5, and 7 to name a few.