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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”TRANSCRIPT
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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 1-2Order of Operations and Evaluating Expressions
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Simplifying Powers: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.)
powerpowernth
baseexponent
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1st
4th
3rd
2nd
5thtimes
cubed
squared
8 8
8 ●n ●n ●n ●n ●n
8 ●8 ●8 ●8
8● 8● 8
8 ● 8
Depends on the value of “n”
4096
512
64
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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 ●4
64
64
32,768
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Practice:
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Simplifying a Numerical Expression
grouping symbols
innermost
parentheses ( ) brackets [ ]
braces { }fraction bar
radical sign
exponents
addition subtraction
left right
multiplication division
left right
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48 ÷ 8 ● 3 + 5 6● 3 + 518 + 5
23
18 + 8 – 3 26 – 3
23
6 + 4 – 6 10 – 6
4
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5● 3(5)15 (5)75
7 + 64 – 2 71– 2
69
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= 2
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Using the Graphing Calculator
http://screencast-o-matic.com/watch/cIQi23V5Yt
Click on the link below watch example using the graphing calculator. When you are done, you will be finished with this lesson