Powers and Exponents

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Powers and Exponents

• An expression like 2 x 2 x 2 x 2 can be written
  as a power. A power has two parts, a base and an
  exponent. This can also be written as 24.

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The exponent tells how many times the base is
used as a factor.
24
The base is the number that is multiplied
two to the 4th power
two to the 4th power
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Powers Words Repeated Factors
20 21 22 23 . . . 2n Any number to the power of 0 is 1 2 to the first power 2 to the second power or 2 squared 2 to the third power or 2 cubed 2 to the nth power or 2 to the nth 1 2 2 x 2 2 x 2 x 2 2 x 2 x 2..x 2
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Write expressions using exponents

• 3 3 3 3 3
• t t t t
• (-9)(-9)
• (x 1)(x 1)(x 1)
• 7 a a a b b

Are you sure about this one?
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Evaluate

1. 23
2. y2 5 if y -3
3. 3(x y)4 if x 2 and y 1

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EXPONENTS TO MULTIPLICATION
(5)(a)(a)(a)(b)(b)
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Where do exponents fit in the order of
operations?
p e md as
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Is there a difference between
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Exponents only go with the letter or number
they are___________
Exponents only go with the letter or number
they are___________
touching
touching
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VOCABULARY

• PERFECT SQUARES
• EXPONENT
• BASE
• POWERS

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