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Summary: When subtracting fractions from whole numbers, make sure the denominators are equivalent before comparing the fractions together. Learn the mathematical process for subtracting fractions from whole numbers with tips from a math tutor in this free video on math skills.
Alex Martinez grew up in western Massachusetts and is currently a mechanical engineering student at the University of Massachusetts at Amherst. He is set to graduate in 2009 with a...read more
"Okay, now I'm going to show you how to subtract fractions from whole numbers, take this example; eight minus one-third. So I''m going to change this to seven plus three thirds, which is the same as eight, minus one-third. So three thirds minus one-third is two-thirds. So we're left with seven and two-thirds. Okay, I'll show you another example of how to subtract a fraction from a whole number. Let's take sixteen and minus four-fifths. To do that we must change sixteen to fifteen and five fifths, which is the same as sixteen; minus four-fifths. Now what we do here is, we take the four-fifths and subtract it from five-fifths and then add the fifteen that we came with originally. Five fifths minus four-fifths is one-fifth and that's how you subtract fractions from whole numbers."
eHow Article: Subtracting Fractions From Whole Numbers