Subtracting fractions puzzle

1234567891011121314151617181920
Across
  1. 2. opposite
  2. 5. a numerical quantity that is not a whole number.
  3. 7. means the same as reduce
  4. 8. to reduce
  5. 11. you put this on a number less than zero
  6. 16. This is usually the bottom of the fraction.
  7. 18. the lowest number of which two different numbers both multiply to
  8. 19. the result of a subtraction problem.
  9. 20. to take away
Down
  1. 1. This fractions numerator is bigger than its denominator.
  2. 3. a fraction less than 1
  3. 4. a fraction that appears different but once simplified is the same.
  4. 6. to simplify fractions
  5. 9. this is the simplified version of an improper fraction
  6. 10. usually a fraction with a denominator
  7. 12. to put fraction in an order of least to greatest or vice versa
  8. 13. what you try to find when trying to make two denominators common
  9. 14. two denominators that aren't common
  10. 15. a number that can be made into two integers;comes from the word ratio
  11. 17. this is usually the top of the fraction.