**3**is a power of 3.

^{2}**3**means that

^{2}**3**will be multiplied by itself

**2**times:

## Dictionary Definition

The Oxford English Dictionary defines a power as "a quantity obtained by multiplying a given quantity by itself one or more times, the number of times the given quantity appears as a factor of the resulting product being indicated as the exponent of that quantity."## The Parts of a Power

A power consists of a base and an exponent:**3**is called the**base**. It is the number that is multiplying itself.**2**is called the**exponent**. It tells you how many times the base is multiplying itself.

## Real Examples of Powers

Some real examples of powers are given below. (**Don't forget:**the base is multiplied by itself as many times as indicated by the exponent).

Powers can contain letters (or symbols) as well as numbers.

- The base can be a letter instead of a number:

- The exponent can be a letter:

- Both the base and the exponent can be letters:

## Saying a Power

How do you say**3**? You could say:

^{2}- 3 to the power of 2.
- The second power of 3.
- 3 to the 2.
- In the special case where the exponent is 2, we can say 3 "squared".

**Note:**In the special case where the exponent is 3, as in 3

^{3}, we can say 3 "cubed".

## Powers of 10

A power of 10 has a base of 10 and an exponent:10^{1} = 10

10^{2} = 10 × 10 = 100

10^{3} = 10 × 10 × 10 = 1,000

10^{3} = 10 × 10 × 10 × 10 = 10,000

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