Maths crossword puzzle

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Across
  1. 6. A decrease in the regular price
  2. 7. Having the same size and shape
  3. 9. The point at which the two axes of a coordinates plane intersect
  4. 10. Money you can earn on a bank account or money you pay towards a bank loan
  5. 11. A fraction in which the greatest common factor of the numerator and denominator is one
  6. 12. An equation that shows two equivalent ratio
  7. 13. Result of adding two or more number
  8. 14. The side opposite to the right angle-it is also the longest side of a right triangle
Down
  1. 1. When you multiply by a sum in parenthesis:a×(b+c)=(a×b)+(a×c)
  2. 2. A diagram used to find the prime factor of any number
  3. 3. A number expressed in relation to 100
  4. 4. To calculate how many times one number contains another
  5. 5. Approximating a number to a given decimal place
  6. 8. One of two or more terms in which the variables are not like