Algebra 2

3. The quantity which, when combined with another quantity using an operation, leaves the quantity unchanged.
4. Additive inverse; of any number b is -b. If b is positive, then -b is negative a - b = a + (-b).
6. The quantity which cancels out the a given quantity. There are different kinds of inverses for different operations.
8. A fraction flipped upside down, Multiplicative inverse means the same thing as reciprocal.
9. (a binary operation) having the property that one term operating on a second is equal to the second operating on the first, as a × b = b × a.
12. A whole number; a number that is not a fraction.

1. number An integer or a fraction.
2. The property that terms in an expression may be expanded in a particular way to form an equivalent expression, as a ( b + c ) = ab + ac.
5. number A number that cannot be expressed as a ratio of two integers.
7. numbers All numbers that include rational and irrational numbers.
10. An equivalent expression when elements are grouped without change of order, as ( a + b ) + c = a + ( b + c ).
11. numbers One of the positive integers or zero; any of the numbers 1, 2, 3, 4...