Video Lesson (Basic Math)
Video Tutorial: Factors, Multiples & Divisibility
This free basic math video tutorial consists of giving you the necessary "preliminaries" to do fractions. The tutor explains what are factors, divisors, prime and composite numbers, how to do prime factorization, GCFs, LCMs, multiples, and the rules of divisibility. He also explains how to use your graphing calculator to help you find the GCF, LCM and multiples.