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Lesson 1: Integers and Numbers
10 Multiply/Divide Exponents with the Same Base < Back | Next >
When two numbers with the same base need to be multiplied together we can write the equation out like so.

54 x 56 can be written as (5 x 5 x 5 x 5) x (5 x 5 x 5 x5 x 5 x 5)

Notice we have 4 fives in the first bracket and 6 fives in the second bracket, so altogether we will have 4 + 6 = 10 fives multiplied together. So we can rewrite the equation as the following:

54 x 56 = 54+6 = 510

Example

Now let’s go over an example of how to divide two exponents with the same base.

Let’s divide 45 by 42

So we have 45 / 42 = (4 x 4 x 4 x 4 x4) / (4 x 4)

If we cancel out two top ours with the two bottom fours we get:

= 43
= 64

So in general to multiply any two powers with the same base by each other you can add the exponents together and than solve the equation and similarly when you divide two powers with the same base together you can subtract the two exponents and than solve.

LESSON 1
1 Introduction to Numbers
2 Integers & Whole Numbers
3 Add & Subtract Integers
4 Multiplication of Integers
5 Integer Division
6 Properties of Numbers
7 Types of Real Numbers
8 Order of Operations
9 Roots and Powers
10 Multiply/Divide Exponents
11 Raising to a Power
12 Roots and Radicals
13 Scientific Notation & Approx
14 Accuracy & Precision
15 Operations w/ Approximate
16 Scientific Notation
< Back | Next >

 

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