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This lesson reviews finding factors and prime factors and using prime factorizations to find the least common multiple (LCM) and greatest common factor (GCF) of several numbers. Additional focused video lessons and related exercises are available in the math toolbox.


Welcome to the FACTORS instruction unit.


These instructional quizzes are short, limited to only about a dozen questions, and they are not graded or timed. Occasionally there will be a question introducing a topic that you are not expected to answer at first. Do not panic. The instructional material will likely be introduced in the following answer explanation. The purpose of these instructional modules is to review subject material by topic that you will likely encounter on the exam and provide some topic specific tips to improve your ability to solve related problems. 


DO YOU KNOW HOW TO COUNT AND FIND YOUR FACTORS?

Khan Academy (Factors, Primes)

Least Common Multiples

Approximately 15 minutes video.

Greatest Common Factor

Approximately 15 minutes video.

LCM and GCF Word Problems

Approximately 10 minutes in several videos.

Factoring Simple Expressions

Approximately 15 minutes in several videos.

Multiplying Binomials

Approximately 15 minutes in several videos.

Factoring Quadratics

Approximately 15 minutes in several videos.

Differences of Squares

Approximately 15 minutes in several videos.

Factoring By Grouping (Co-efficient<>1)

Approximately 15 minutes in several videos.

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