Math operators,

plus (+), minus (-), multiplication (*), and division (/) are defined in all programming languages. They do what you would expect.

Math Operators

Math in a computer language is very similar to math on a calculator, or even the math you do in algebra.

Basic Operators

The basic operations are +, -, /, and *. (plus, minus, division, multiplication). These are the same in all languages.

Language-specific math operations are:

Precedence

Precedence is the order in which a combination of mathematical operations takes place. For example, if you have 5 + 6 - 7 * 8 / 9, do you do the + first, or the /, or perhaps the * or -?

Most programming languages have a list of dozens of precedence rules, but they can be summed up as: (Multiplication and Division) before (Addition and Subtraction). 
Left to right for equal precedence 
Evaluate expressions in parentheses before anything else! 
Examples: 5 + 6 * 7 is equivalent to 5 + (6 * 7), or 47

5 + 6 - 7 is equivalent to (5 + 6). - 7 or 4

5 * (6 - 7) is equivalent to 5 * (6 - 7) or -5.

Math Function Libraries:

Almost all modern programming languages provide a "library" of math functions for use in mathematical programming. These include trig functions…