EXPONENTS TO THE POWER OF 2

EXPONENTS
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An exponent is a number that show how many times a base is used as a factor.
7 ⁴ = 7*7*7*7
7 ⁴=2401

EXPONENTS
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When a number is squared-that means the base is used as a factor 2 times
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When a number is cubed – that means the base is used as a factor 3 times
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Sometimes exponents are written in word form.
4 ⁵ is written as four to the power of five

PRACTICE
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Practice Book page 14.1 (correct)
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Math Journal 2 page 211-212
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Math Masters page 92

EXPONENTS AND EXPANDED FORM
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Write 53,471 in expanded form in your math spiral.
50,000 + 3,000 + 400 + 70 + 1
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Now separate each numeral and multiply it by the place value it sits in
5 x 10,000 + 3 x 1,000 + 4 x 100 + 7 x 10 + 1
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Next use exponents and 10 as the base number to rewrite the place value number
5 x 10 2
⁴ + 3 x 10³ + 4 x 10 + 7 x10 + 1

PRACTICE

Math Practice Book page 14.2
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Problem Solving 14.2
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Math Journal 2 page 215, 218
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Math Masters page 298

NEGATIVE POWERS OF 10
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Math Journal 2 page 216
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A negative exponent tells you which place value to go to:
-1 = tenth place
-2 = hundredth place
-3 = thousandth place
-4 = ten-thousandth place