Page 146 - Math Course 1 (Book 1)

Negative Exponents

Mo. 4

Lesson 6 Use Negative Exponents

Examples

KEY CONCEPTS:
1
1.Write expressions using negative exponents. Write as an expression using a negative
125
2 Evaluate numerical expressions containing exponent.
negative exponents.
1 = 1
125 5 • 5 • 5 Find the prime factorization of 125.
MO. 4 - L6a
= 1 3 Def nition of exponent
Write Expressions Using 5
Negative Exponents = 5 -3 Def nition of negative exponent

Answer 5 –3
Key Concept

Negative Exponents Your Turn!
1
-n
Symbols a = for a = 0 and any whole number n.
a n Use Positive Exponents

-4
Example 5 = 5 1 4 Write 5 –3 using a positive exponent.
A. 53
1
B. 5
Let’s Begin 3
C. 1
5 3
D. 52
Use Positive Exponents
Answer
Examples

Write 3 –4 using a positive exponent. –6

-4
3 = 1 4 Def nition of negative exponent Write y using a positive exponent.
3 1
A. 6
1 y
Answer 4 6
3 B. y

Write m –2 using a positive exponent. C. 1
6
1
-2
m = 1 2 Def nition of negative exponent D. y 5
m
Answer
1
Answer 2
m

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