1. Lesson 1-2 Order of Operations and Evaluating Expressions
Warm Up:
You’ve won! For a door prize, you get to choose between the two options shown. Which is the better prize? Why?
You get $60 immediately.
PRIZE 1
You get $1 the first day.
Then each day for the next
5 days, you get twice the
previous day's amount.
PRIZE 2

2. Simplifying Powers: power power nth base exponent
An expression like xn 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
power
base
exponent

3. 8 8 8 ● 8 64 8● 8● 8 512 8 ●8 ●8 ●8 4096 8 ●n ●n ●n ●n ●n 1st 2nd
squared
3rd
8● 8● 8
512
cubed
4th
8 ●8 ●8 ●8
4096
times
8 ●n ●n ●n ●n ●n
Depends on the value of “n”
5th

4. Evaluating Powers http://screencast-o-matic.com/watch/cIQ1cgV5ix
2●2 ●2 ●2 ●2 ●2 64 64
4●4 ●4
32,768
To see examples using the graphing calculator, click on the link below. (Hint: Use the “POP-OUT” feature for a better view.

5. Practice:

6. Simplifying a Numerical Expression
grouping symbols
innermost
parentheses ( )
brackets [ ]
braces { }
radical sign
fraction bar
exponents
multiplication
division
left
right
addition
subtraction
left
right

7. 48 ÷ 8 ● 3 + 5
6● 3 + 5
18 + 5 23
– 3
26 – 3 27
6 + 4 – 6
10 – 6 4

8. 5● 3(5)
15 (5) 75
– 2
71– 2 69

9. = 2