This is a little book for students who wish to have the essential formulas and equations of mathematics in a single easily accessible source. In about 50 pages, the 350 most essential mathematical formulas are listed. Unlike other large books on this topic, there is no need to go through hundreds of pages and thousands of formulas for the student to get the basic equations. The author has searched several books on mathematical formulas and tables and selected only those equations which are essential to the student. The mathematical formulas and equations listed in this book are useful for students and researchers in various fields including mathematics, physics, engineering, etc. Only the most elementary and basic topics are covered including formulas for various geometric shapes, several types of functions (trigonometric, hyperbolic, exponential, logarithmic, etc), the quadratic equation, analytic geometry, derivatives and integrals, arithmetic series, geometric series and Taylor series.