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Comparing fractions

Comparing Fractions

Old least common multiple

Example of figuring out the least common multiple of two numbers.  This is one of the very first videos made on Khan Academy.    Mistake notice:  Sal forgets 56 as a multiple of 8.

Greatest common divisor

4 example problems of determining the greatest common factor of two numbers by factoring the 2 numbers first

Finding factors of a number

Finding Factors of a Number