Fractions
Sometimes a mathematical equation requires more than one
operation. It may be necessary to add, subtract, multiply and
divide several numbers to answer one question. The Order of
Operations is a set of rules that determine the order in which
different operations are performed. Apply the rules outlined
below.
Rules of Arithmetic Operations
Rule 1
If the operations are only addition and subtraction (+,
–), do them from left to right.
Example: 
Subtract  . Then add  .
Rule 2
If the operations are only multiplication and division (x,
÷), do them from left to right.
Example: 
Multiply  . Then divide the answer by  .
Rule 3
If there is a mixture of addition, subtraction, multiplication
and division (+, –, x, ÷), do the multiplication and
division before the addition and subtraction.
Example: 
Divide  . Then subtract the answer from  .
Rule 4
If there are brackets, do the operations inside brackets
first.
Example: 
First, add all the fractions inside the brackets. Then
multiply the answer by  . Finally, subtract  from
that answer.
|
