So you need to know the order of operations for not
only addition and subtraction, but also parentheses,
exponents, multiplication and division to solve
mathematical problems correctly.
The order of operations is as follows:
1 - Parentheses
2 - Exponents and Roots
3 - Multiplication
4 - Division
5 - Addition
6 - Subtraction
There are many ways of remembering the order of operations. The
most common way of remembering the Order of Operations is
to memorize the acronym PEMDAS. What is PEMDAS? PEMDAS is
the first letter of each operation above.
A lesser-known way of remembering the Order of Operations is
"Please Excuse My Dear Aunt Sally."
Anyway, take the time to learn the Order of Operations so you
do not make easy mathematical errors in the future.