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Why am I having so much trouble doing Numbers in expanded form?

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 Hi: I know it has been a long time that I had Pre-Algebra, 1st and 2nd-year algebra, Geometry and Trig.  I am looking about 50 or so years ago.  I can ace most of the practice session but it comes...

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Give positive feedback on KHAN Academy

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I was searching for a good school that offered a variety of classes and I came across a few.  I checked them out and although some did offer a multitude of courses, it wasn't what I wanted.Some, yo...

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