Math Crossword

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Across
  1. 3. Shape with four EQUAL sides and four right angles
  2. 9. You add all of the sides together to find the ___ of a shape
  3. 11. Shape with four sides and four right angles
  4. 13. Seven plus five
  5. 15. Shape with eight sides
  6. 17. Shape with seven sides
Down
  1. 1. Seven times five
  2. 2. Shape with three sides
  3. 4. Any shape with four sides
  4. 5. Shape with nine sides
  5. 6. 1000 millimeters equals 1 ____.
  6. 7. Shape with six sides
  7. 8. Take one number away from another number
  8. 10. Shape with ten sides
  9. 12. Shape with five sides
  10. 13. Seven minus five
  11. 14. You multiply the base x height to find the ____ of a rectangle
  12. 16. Combine two or more numbers together