Order of Operations

A common technique for remembering the order of operations is abbreviated as PEMDAS, which is turned into the mnemonic phrase

Please Excuse My Dear Aunt Sally

This listing tells you the ranks of the operations:

Parentheses outrank exponents, which outrank multiplication and division (but multiplication and division are at the same rank), and multiplication and division outrank addition and subtraction (which are together on the bottom rank). In other words, the precedence is:

1. Parentheses
2. Exponents
3. Multiplication and Division (from left to right)
4. Addition and Subtraction (from left to right)