(5th) Introduction to Exponents Lesson

Introduction to Exponents Lesson (5th)

Exponents are repeated multiplication:

3² = 3 x 3

3³ = 3 x 3 x 3

3^{4 = 3 x 3 x 3 x 3}

The exponent (the small raised number) tells you HOW MANY times to multiply.

7³ = 7 x 7 x 7

Multiple Choice

What does 4³ mean?

• 4 x 4 x 4

• 3 x 3 x 3 x 3

• 4 + 4 + 4

Multiple Choice

Which is equivalent to 5²

• 2 x 2 x 2 x 2 x 2

• 5 + 2

• 5 x 5

Let's evaluate, or solve, some exponents.

4² = 4 x 4

4 x 4 = 16

So, 4² = 16

3³ = 3 x 3 x 3

3 x 3 = 9

9 x 3 = 27

3³ = 27

Multiple Choice

Evaluate: 3²

• 3 + 3 = 6

• 3 x 2 = 6

• 3 x 3 = 9

Multiple Choice

Evaluate:

5³

• 5 x 5 x 5 = 125

• 5 x 3 = 15

• 3 x 3 x 3 x 3 x 3 = 243

Multiple Choice

Evaluate: 2⁴

• 8

• 16

• 24

• 6

Remember: 2⁴ =

2 x 2 x 2 x 2

2 x 2 = 4

4 x 2 = 8

8 x 2 = 16

Multiple Choice

Evaluate: 6³

• 18

• 36

• 216

Multiple Choice

Last one:

3³

• 9

• 27

• 33

Take the time to WRITE OUT THE NUMBERS and you will be

exponent experts!