lesson 4-2 pages 153-157 powers and exponents lesson check 4-1
TRANSCRIPT
What you will learn!1. How to write expressions using exponents.
2. How to evaluate expressions containing exponents.
What you really need to know!
A number that is expressed using an exponent is called a power. The exponent tells you how many times to use the base as a factor.
34 = 3 x 3 x 3 x 3
What you really need to know!
Expressions involving powers are evaluated using order of operations. Powers are evaluated after any grouping symbols and before other multiplication or division operations.
Example 6:
Express 235,016 in expanded form.
(2 x 105) + (3 x 104)
+ (5 x 103) + (0 x 102)
+ (1 x 101) + (6 x 100)