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Lesson: Challenging Arithmetic - 15

Exponents With Different Bases

[Page 15 of 30]

These fun tricks for multiplying and dividing powers only work if you have the same base. With different bases, you cannot simply add or subtract exponents!

Video - Exponents with Different Bases

Likewise, you cannot simply add and subtract powers with the same base:

You can combine exponents when you are multiplying powers with the same base; in that case add the exponents.

You can also combine exponents when you are dividing powers with the same base; in that case subtract the exponents:

You cannot combine exponents when adding or subtracting the bases!

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Test Prep Lessons With Video Lessons and Explained MCQ

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Each exam has different types of math sections. The sections may be called Mathematics or Arithmetic Problem Solving. In the math section of the exam, you will be tested on basic math skills such as addition, subtraction, multiplication, and division. Some sections may include fractions, decimals, graphs and percentages. All questions will be a multiple choice format. The amount of math questions on each test will vary.

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