Math Properties

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Across
  1. 5. changing the grouping doesn’t change the sum
  2. 6. changing the grouping doesn’t change the product
  3. 12. a number added to zero results in the number
  4. 13. if x=y, then y can be substituted for x
  5. 15. any number multiplied by zero results in zero
  6. 16. subtract the same number from both sides of an equation
  7. 17. if two numbers are equal to the same number, they are equal to each other
  8. 18. a number equals itself
  9. 19. divide the same number on both sides of an equation
Down
  1. 1. changing the order doesn’t change the sum
  2. 2. if x=y, then y=x
  3. 3. a number multiplied by negative one is the opposite of the number
  4. 4. changing the order doesn’t change the product
  5. 7. a number multiplied by one results in the number
  6. 8. multiply the same number on both sides of an equation
  7. 9. the product of a number and its reciprocal is one
  8. 10. when added to its inverse, the sum of the two numbers is zero
  9. 11. add the same number to both sides of an equation
  10. 14. multiply the number outside the parenthesis by everything inside