1. Section 1.2 Basic Operations of Algebra

2. 2 Fundamental Laws of Algebra Commutative Law of addition: Commutative Law of multiplication: Associative Law of addition: Associative Law of multiplication: Distributive Law:

3. 3 Name that Property

4. 4 Operations with Zero Let a represent a real number: a + 0 = a – 0 = a x 0 =

5. 5 Operations with Zero Let a represent a real number not equal to 0. 0  a = a  0 = 0  0 =

6. 6 Order of Operations Evaluate: 5 + 4 x 6 – 9  3

7. 7 PEMDAS (“Please Excuse My Dear Aunt Sally”) 1) Perform operations within __________ _____________. 2) Perform operations involving ___________ (and _____________). 3) Perform operations involving __________________ or _____________, working left to right. 4) Perform operations involving __________________ or _____________, working left to right.

8. 8 Examples