PEMDAS

PEMDAS is an acronym that helps you remember the order of operations in math:

• P : Parentheses

• E : Exponents

• M : Multiplication

• D : Division

• A : Addition

• S : Subtraction 

PEMDAS is used to solve complex math problems by simplifying and accurately solving mathematical expressions. 

Here are the steps to follow when using PEMDAS:

1. 1. Simplify any expressions in grouping symbols, such as parentheses

2. Simplify all exponents

3. Perform multiplication and division from left to right

4. Perform addition and subtraction from left to right 

You can also use the mnemonic phrase "Please Excuse My Dear Aunt Sally" to help you remember the order of operations. 

Different countries use different acronyms for the order of operations. For example, the United Kingdom and other Commonwealth countries use BODMAS, which stands for Brackets, Of, Division/Multiplication, Addition/Subtraction.

PEMDAS is an acronym for the words parentheses, exponents, multiplication, division, addition, subtraction. Given two or more operations in a single expression, the order of the letters in PEMDAS tells you what to calculate first, second, third and so on, until the calculation is complete.