Evaluating Expression When Exponents are Integers

25 = 2 · 2 · 2 · 2 · 2 = 32

24 = 2 · 2 · 2 · 2 = 16

23 = 2 · 2 · 2 = 8

22 = 2 · 2 = 4

21 = 2 = 2

20 = 1 = 1= == =

÷2

÷2

÷2

÷2

÷2

2-1

2-2

1/21/2 · 2

1/21/4

÷2

÷2=

=122

121

Write the expression using positive exponents.

4-5 =145

8-3 =183

10-6 =1

106

2-18 =1

218

128=1

12-8

72=17-2

If the exponent is negative, then it equals a fraction with one over the same base with the positive version of the exponent.

HOMEWORKWKST: Lesson 3.5

Patterns with Integer Exponents