Re: Cool math shortcuts
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Anyway, does anyone know of any other shortcuts like this or of a book I could get to learn how to solve problems more quicky in my head. It doesn't really serve any purpose other than to entertain myself, but I'm curious if there is something like this out there.
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I want a book also or a website that has examples of math systems. Years ago I knew a cool system using visual place holders ect. it was simple but had it's uses. I will try to find it when I have more time.
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