Episode 82
082 TMD What Is "Casting Out Nines"? Part 1
Learn how to use casting out nines to quickly and easily check your answers to arithmetic problems
The Math Dude Quick and Dirty Tips to Make Math Easier · Macmillan Holdings, LLC
November 11, 20117m 2s
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Show Notes
Learn how to use casting out nines to quickly and easily check your answers to arithmetic problems
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