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Lesson 9: Basic Subtraction

Added on 5/23/2008 by MathWithLarry Tutorials

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Many older students have trouble understanding how basic subtraction works. Sometimes this is because they learned the procedure, but never really learned why the procedure worked. Other times it's because they became used to doing every computation on the calculator. It's very important to have a very clear understanding of how subtraction works. Copyright © MathWithLarry.com

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