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Powers or Exponents of Numbers




 
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More Lessons for GMAT Math

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Videos that will help GMAT students review powers or exponents of numbers.

How to understand positive exponents, zero exponent and negative exponents?

When a number k is multiplied by itself n times, it can be expressed as kn, which means the nth power of k.
For example, 23 = 2 × 2 × 2 = 8

When we square a number that is greater than 1, or raise it to a higher power, we get a larger number.
23 = 8

When we square a number between 0 and 1, or raise it to a higher power, we get a smaller number.



Basic exponents

Exponents - Basics
Covers the basic meaning of exponents that are whole numbers and how to evaluate and simplify expressions. Also defines zero exponent.



Power and Exponent
A Power consists of two parts, Exponent and Base, We are going to learn how to identify the components of a Power and to evaluate it if necessary.
Exponents: Is the Answer Positive or Negative?
Are you confused about simplifying exponent problems? Are these math problems -32 and (-3)2 the same?


 

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.


You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.


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