"A fascinating and useful book. I recommend it."
--Jaime Escalante (of Stand and Deliver fame) Hiram W. Johnson High School

..".will fascinate students of all ages. A resource 'must' for all math programs."
--Howard Wang, Founding Director of Sierra Canyon College Preparatory School

"The tips and tricks were really cool."
--Liz Matthews, age 12, Anacapa Middle School

Packed with 50 tricks and tips that let you add, subtract, multiply, and...