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
Large number of solved practice MCQ with explanations. Video Lessons and 10 Fully explained Grand/Full Tests.
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.