*Math* is the science of numbers. You may start out learning addition and subtraction in *math*, and then end up years later tackling multivariable implicit differentiation problems. Say what?!

*Math* is the common, shortened form of *mathematics*, which comes from the Greek *mathematike tekhne*, "mathematical science," from the root *mathema*, "knowledge or science." Math is one of the basic subjects that are covered in nearly every school, from basic addition to calculus. If someone says, "Do the *math*," they usually mean, "Just think about it — it's so obvious."