Warm Up: You’ve won! For a door prize, you get to choose between the two options shown. Which is the better prize? Why? Lesson 1-2 Order of Operations and Evaluating Expressions

Simplifying Powers: An expression like x n is called a ________________ and is read “x to the _____ ______________.” x is called the ______________ (the number being multiplied) and the n is called the _______________ (it tells how many times the base is used as a factor.) power nth base exponent

1st 4th 3rd 2nd 5th times cubed squared ● n ● n ● n ● n ● n 8 ● 8 ● 8 ● 8 8● 8● 88● 8● 8 8 ● 8 Depends on the value of “n”

Evaluating Powers There is a link on the last side demonstrating how to use the graphing calculator to evaluate problems with exponents. 2●2 ●2 ●2 ●2 ●2 4●4 ● ,768

Practice:

Simplifying a Numerical Expression grouping symbols innermost parentheses ( )brackets [ ] braces { } fraction bar radical sign exponents additionsubtraction left right multiplicationdivision left right

48 ÷ 8 ● ● – 3 26 – – 6 10 – 6 4

5● 3(5) 15 (5) – 2 71– 2 69

= 2

Using the Graphing Calculator Click on the link below watch example using the graphing calculator. When you are done, you will be finished with this lesson