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Curious and Useful Math

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Visit this site: http://www.curiousmath.com/

Author:Clay Ford
Description: Tricks and rules for quickly calculating certain types of math problems, many from the 1888 book The Carpenter's and Joiner's Pocket Companion. Multiplication Tricks; Division Tricks; Squaring Tricks; Can it Divide...?; Age Math; Bible Numbers; Box Tricks; Word Roots; 1729, etc.; Scroll Down Slowly; Square Roots by Hand.

Levels: Elementary, Middle School (6-8)
Languages: English
Resource Types: Problems/Puzzles
Math Topics: Division, Multiplication, Exponents/Roots, Religion

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