Operations should be done in this. It is the set of rules that determines which operations should be done before or after others. What part should you calculate first.
Exponents - Work out all the exponential expressions.
PEDMAS is just a way of remembering it. From left to right start with division and multiplication and continue with addition and subtraction. 4 2 7 13 Common factor - A factor that is shared by two or more numbers. PEDMAS is just a way of remembering it.