Math Crossword Puzzle

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Across
  1. 3. Only 2 steps in this mathamatical problem
  2. 7. If you multiply 3 numbers of a group you will still get the same answer for all 3 of them
  3. 11. 2?6=8
  4. 13. Having the same variable of a different number in the equation
  5. 15. Letters used for formulas
  6. 16. To put in
  7. 17. A group of numbers, words, and facts
  8. 18. A number on top of a number with a line between the 2 numbers
  9. 19. Also ryhmes with laughing
  10. 20. The small number above a number
Down
  1. 1. Putting the numbers from Greatest to Least
  2. 2. The opposite of a positive number
  3. 4. Usally a very large number and has to be to the 10th power, and always putting a decimal always after the first number
  4. 5. The bottom of a shape
  5. 6. A way to show 2 quantites
  6. 8. You can use it to chedck your weight
  7. 9. A round shape
  8. 10. When you cant break down a large number anymore (10/14) = (5/7)
  9. 12. You type a problem and it has all the answers
  10. 14. A shape that has 4 angles