A positive exponent counts how many times a number is multiplied to itself.
For a nonzero number b, we define
In general, for an integer n > 1
bn = b×b×b×...×b (n lots of b)
"bn" is called a power of b. We read this as "b to the n".
We call b the base and n the exponent.
We also read b2as b squared, and b3 as b cubed.
For more examples, click the "New Example" button below. Each time you click the button, a new example will appear.
Now try these. Attempt them without the use of a calculator. Give the final numerical answer only and not the middle step provided in Example 1.