Math is Fun! A guide to number sense and mental arithmetic

Whether you are a serious competitor in "number sense" or just want to enjoy some fun mental math tricks, this is the book for you! Math is Fun shows that math can be fun! The book covers tricks for students from fourth grade all the way through high school. There is also plenty of real mathematics along the way including geometry, algebra, and calculus. Also included are two sample number sense tests and the answer keys.