wHY P.E.M.D.A.S. works

This section will look at the properties of each operation that allow PEMDAS to work.

ADDITION: Combining two amounts to get their total. (Undone by subtraction)

SUBTRACTION: Take one number away from another to find the difference. The inverse of addition

MULTIPLICATION: Repeated addition (Undone by Division)

DIVISION: Splits a number into equal parts. The inverse of Multiplication