math terms crossword

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Across
  1. 1. one of the four regions of the coordinate plane
  2. 4. result of addition
  3. 7. where x and y axis intersect (0,0)
  4. 8. a number that terminates or repeats or a number that can be written as a fraction
  5. 9. when the sum of two numbers is zero(0)
  6. 11. parts of an equation or expression that are added or subtracted
  7. 12. a number by itself
  8. 15. distance around a figure
  9. 16. When you add or multiply, the order doesn't matter
  10. 17. when you add or subtract the same number to both sides of an equation, the equation remains balanced
Down
  1. 2. when 3 or more numbers are added or multiplied, the order/grouping doesn't matter
  2. 3. when the product of two numbers is one
  3. 5. the number multiplied by a variable
  4. 6. When you multiply or divide the same number on both sides of an equation, the equation remains balanced
  5. 10. a number that neither repeats, terminates, nor is a fraction
  6. 12. location of a point on a coordinate plane (x,y)
  7. 13. the amount of surface
  8. 14. result of multiplication