## Order of operations

When calculations have more than one operation, we have to follow rules for the order of operations:

**Step 1:**

From left to right, do all **multiplication and division**.

**Step 2:**

From left to right, do all

**addition and subtraction**.

However, if there are

**parentheses**or other types of brackets, do all operations that lie

**inside**them first:

The order of operations also applies while working inside parentheses:

When you have parentheses inside brackets and braces (sometimes referred as

**nested parentheses**), always work from the inside out. There are multiple types of brackets. The innermost

**parentheses/round brackets ()**are calculated first, followed by the

**brackets/box brackets []**that normally form the next layer, followed by

**braces/curly brackets {}**that form a third layer outwards: