This is a series of mathematics lessons that will review the important topics in arithmetics with examples and solutions.

These lessons will also be useful as a pre-Algebra review.

The videos are presented by the Portland Community College.

Related Topics:

More Mathematics Lessons.

Previous set of video math lessons in this series.

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Subtraction of Fractions

Subtraction of Mixed Numbers

Order of Operations and Average

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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