The operations are addition subtraction multiplication division exponentiation and grouping. When doing computations always follow the order of operations and always perform the operations according to the following rule. Operands The numbers used for an operation are called operands.
Or go from right to left.
For example in Great Britain PEMDAS is called BODMAS because they call their operations Brackets Orders Divisions Multiplications Additions and Subtractions. In math order of operations are the rules that state the sequence in which the multiple operations in an expression should be solved. Left-to-right meaning ad-hoc evaluation. You will likely come up with a wrong answer if you perform calculations out of the order.