Across
- 6. the distance from zero to any number
- 7. a number without fractions; an integer.
- 8. a + b = b + a
- 9. A straight line where every point on the line represents a number.
Down
- 1. the positive integers (whole numbers) 1, 2, 3, etc., and sometimes zero as well.
- 2. is whole-valued positive or negative number or 0
- 3. (a + b)+c = a + (b + c) = (a + c) + b
- 4. an integer or a number that can be expressed the quotient of two integers (where the denominator does not equal zero)
- 5. a + b = c