Rational Numbers Operations

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Across
  1. 2. property that says the product of any number and 0 is 0.
  2. 4. all numbers less than zero; numbers on the left side of zero on the number line
  3. 8. property which says for any numbers a and b: a*b = b*a
  4. 9. two numbers that are the same distance from zero o a number line, but in opposite directions
  5. 11. -, minus symbol that indicates a number is less than zero
  6. 12. property which says for any numbers a, b, and c: (a+b)+c = a+(b+c)
  7. 13. number on the bottom of the fraction
  8. 17. the distance from zero on a number line
  9. 19. a ratio involving two quantities measured in different units
  10. 20. property that says that the product of any number and 0 is that number
Down
  1. 1. the counting numbers, plus zero
  2. 3. the set of positive whole numbers, their opposites, and zero
  3. 5. addition (+), subtraction (-), multiplication (x), and division (รท) are examples of this
  4. 6. the reducing a fraction so it is in its simplest form
  5. 7. all numbers greater than zero; numbers on the right side of zero on the number line
  6. 10. numbers that can be written in the form a/b or -a/b, where a is a whole number and b is a positive whole number
  7. 14. the sum of all values in a set of numbers, divided by the total number of values
  8. 15. to change a measurement from one unit to another
  9. 16. number on the top of a fraction
  10. 18. a term without a defined value or meaning. This is the result when you divide by zero