Evaluate expressions in standard operator precedence.
Formula
PEMDAS: ( ) then × ÷ then + −
Explanation
Parentheses first, then multiplication and division left to right, then addition and subtraction left to right. Exponents (when present) sit between parentheses and ×÷. Never rely on left-to-right reading of mixed + and × without precedence.
Variables
operandsnumbers in the expression
operators+, −, ×, ÷, and grouping ( )
When to use
Any multi-operator arithmetic expression in schoolwork or everyday calc.