## Chapter 3, Lesson 2

**3-2.A** understand the Commutative and Associative properties

**Which of these expressions does not illustrate either a Commutative or an Associative Property?(a)** 1 + 9 = 9 + 1

**(b)**1(9) = 9(1)

**(c)**1(9) = 9

**(d)**1 + (7 + 2) = (1 + 7) + 2

**3-2.B** understand the Distributive Property

**Which of these expressions is equivalent to —5[8 — (—9)]?(a)** —5(8) — (—9)

**(b)**—5(8) + 9

**(c)**—5(8) — 5(—9)

**(d)**—5(8) + 5(—9)