This factors worksheet is great for practicing finding the Greatest Common Factor of number sets. Understanding Greatest Common Factors are very important for working with fraction problems. The problems may be selected from four different number ranges. The easiest keeps the number set not greater than 24, and the hardest will keep the number sets not greater than 120. This factors worksheet will generate 10, 15 or 20 Greatest Common Factor problems per worksheet, and remember every time you create a worksheet the problems will change and will not repeat.
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