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Activity:
Ms. Vallejo won the lottery and would like to
give each of you some $$!
Using only 4 numbers, what's the GREATEST
value that you can make?

9999

9

999

99

99

999

9
Pre-Algebra
Lesson 6.1
Positive Exponents
Table Discussion

Positive
Exponents
Pre-Alg 6.1 Positive Integers
base

3 =
6

a

n

exponent
Exponent

Expanded

Standard

Form

Form

Form
multiplication = repeated addition
exponents = repeated multiplication

Why did mathematicians
invent exponents?
To make life easier
(and because they were lazy!)
What is the diference between...
difference

(-7)

2

and

SMOTD!
2

-7
Multiplying Exponents Rules:
a
b
(a+b)

n xn =n
4 x4 =4
2

5

(2+5)

2 x2 =
6

3

10 x 10 =
19

50

= 4

(7)

=
What's the answer?

5

0

5

1
For all nonzero real numbers,

a =1
0 = 1
3
0

a =a
1 = 7
7
1

HC
3 x3 =3
5

0

(5+0)

= 243

3 x0=0
5

3 x 1 = 243
5
Examples:

(5 + 3) + 8
1

0

-7a3 when a=-3
http://www.youtube.com/watch?v=wCFSy_JKz3g
or
Pre-Alg 6.1 Positive Integers
Pre-Alg 6.1 Positive Integers
Pre-Alg 6.1 Positive Integers
Pre-Alg 6.1 Positive Integers
Pre-Alg 6.1 Positive Integers
Homework
Assignment
Constant Growth

Exponential Growth
What is "Exponential growth?"

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Pre-Alg 6.1 Positive Integers