Have you ever tried to solve a math problem, where you didn’t know where to start or what to do next?
The order of operations is a set of rules that tells us what math operation to do first in an expression with multiple operations like addition, subtraction, multiplication, and division.
PEMDAS is an acronym that reminds us of the sequence of steps to follow when solving mathematical expressions with multiple operations.

P stands for Parentheses (sometimes called Brackets).
E stands for Exponents (sometimes called Indices).
M stands for Multiplication.
D stands for Division.
A stands for Addition.
S stands for Subtraction.

Much like grammatical rules that govern how we build sentences, PEMDAS is a set of rules mathematicians came up with and agree to follow so that we can have consistency and clarity when performing calculations.