"Simple methods for doing math quickly in your head; Shortcuts and tricks for on-paper calculations; Helpful insights to improve your understanding"--Cover.
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"Simple methods for doing math quickly in your head; Shortcuts and tricks for on-paper calculations; Helpful insights to improve your understanding"--Cover.
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Add this copy of Speed Math: Simple Methods to Do Math Quickly in One S to cart. $5.98, good condition, Sold by ThriftBooks-Reno rated 4.0 out of 5 stars, ships from Reno, NV, UNITED STATES, published 2014 by Alpha Books.
