1. 3-1 Warm Up: p. 131 #’s 2 – 6 EVEN ONLY

2.  An exponent is a shorthand notation that tells how many times a number is multiplied by itself.  Example: 2³ Means that 2 is multiplied by itself 3 times. The two in the expression is called the __________, and the 3 is called the _______________ (or power).

3. Example:  3 ⁵ Means that 3 is multiplied by itself _____ times. 3 ⁵ = 3 × 3 × 3 × 3 × 3 = 243 Solve: 4 2 = ________ x ________ = ____________ 6 3 = ________ x _________ x ________ = ____________ 2 4 = ________ x _________ x _________ x ________ = ___________ 3 2 =

4. PEMDAS P arentheses E xponents M ultiply A dd D ivide S ubtract Steps: 1. Work inside _____________ ( ) 2. Simplify ________________ Ex: x 3 3. __________ and _________ in order from left to right 4. __________ and _________ in order from left to right Examples: 1) (2 3 + 4 3 ) – 10 2) 3 4 (7- 2) 3 3) 5 2 ÷ 5 3 - 11