1. If a = 4, b = 3, and c = 2 then abc equals ________.

2. Write an algebraic expression for a number n increased by a number m.

3. Write an algebraic expression for 12 decreased by z.

4. Which property is illustrated by (3 +4) + 6 = 3 + (4 + 6)?
identity
distributive
associative
commutative