What is 2 to the power -3?

1 Answer
Dec 6, 2017

The answer is 18.

Explanation:

Since your exponent is negative, you will have to make a fraction. To make the exponent even, you will make 1 the numerator and 2 to the power of 3 the denominator.

Now that you have a fraction, and the exponent is no longer negative, you will keep 1 as the numerator and have 222 as the denominator.

You can simplify the denominator. 2 times 2 is 4 times 2 again, is 8. The numerator is 1 and the denominator is 8, which is the fraction 18.

Also, 1 will always be the numerator when you are trying to simplify a number that has a negative exponent.