Mental Math Challenges by Michael L. Lobosco, Sterling Publishing

Mental Math Challenges

Michael L. Lobosco, Sterling Publishing

80 pages first pub 1999 (editions)

informative reflective medium-paced
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Imagine guessing someone's age with just three simple questions, totaling up any five shopping items faster than a calculator, or changing the color of a toothbrush in a flash. You can--with these colorful math challenges. All you need are some re...

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