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.

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Primes and Composites

Prime Factorization

Least Common Multiple

Fractions and Mixed Numbers: What is a Fraction?

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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