Exponents

A scientist reports that a bacteria culture contains 3⁴ bacteria.
How many bacteria is that?

• 12
• 81
• 7
• 95

How do you write 2 x 2 x 2 x 2 with an exponent?

• 4²
• 2⁴
• 2²

Find the equivalent expression.
15×15×15×15

• 15⁴
• 4¹⁵
• 15x4
• 15+15+15+15

Any number written to the 0 power is always 1
Example: 8⁰=1

• True
• False

3⁴ is bigger than 4³.

• True
• False

Find the equivalent expression.

9 x 9 x 9 x 9 x 9

• 9⁵
• 9¹⁵
• 9 x 5
• 9 + 9 + 9 + 9+ 9

To square a number is to use what mathematical operation?

• Division
• Subtraction
• Multiplication
• Addition

2⁵ is the same as 2 x 5.

• True
• False

Choose the answer.
5²

• 10
• 15
• 20
• 25

56¹ = ?

• 56
• 0
• 1
• 65