Secrets of Mental Math
The Mathemagician's Guide to Lightning Calculation and Amazing Math TricksPaperback - 2006
Did you know it's easier to add and subtract from left to right, rather than the other way around? That it's possible to square a three-digit number in mere seconds? Regardless of their skill level, with this book, anyone can mentally calculate complex problems with amazing ease.
Publisher: New York : Three Rivers Press, c2006.
Edition: 1st ed.
Branch Call Number: 510
Characteristics: xxiv, 278 p. : ill. ; 21 cm.