1. Exponents
1.5.17

2. Thursday, January 5, 2017
LG: Exponents
HW: Finish classwork
Do Now:
Jon says the answer to 1+3× 6+2 − is 25. Julie says the answer is 18. Who is correct? Explain.

3. Base - when a number is raised to a power, the number that is used as a factor is the base.
Exponent - the number that indicates how many times the base is used as a factor.
Exponential form - a number is in exponential form when it is written with a base and an exponent.

4. 5 3 5 3 Five cubed Exponential Form Word Form Expanded Form 5×5×5
base
Exponential Form
5 3
Word Form
Five cubed
Expanded Form
5×5×5
Standard Form
125
* Any number raised to the first power is itself = 5
* Any number raised to the zero power is always =1

5. The base of an expression can be any kind of number
𝟕 𝟐
Seven squared 49
( 1 3 )⁵
one-third to the power of five
1 243
(0.2)³
Two-tenths cubed
0.8

6. Since 1906, the height of Mount Vesuvius in Italy has increased by about feet. How many feet is this?