Youtube videos by Julie Harland are organized at http://YourMathGal.com. Shows an upside down division method for finding the Greatest commmon factor (also called the greatest common divisor) of 2 or more numbers.
gcf2.mp4<br />For more great math videos visit: www.youtube.com/user/videosbyjulieharland/videos
GCF of Numbers Part 2
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GCF of Numbers Part 2