Order of Operations
Rule 1:  Simplify all operations inside parentheses. ( ) 
Rule 2:  Simplify all exponents, working from left to right. 5^{2}^{ } 
Rule 3:  Multiply and divide, working from left to right. X & ÷ 
Rule 4:  Add and subtract, working from left to right. + &  ****If a problem includes a fraction bar, perform all calculations above and below the fraction bar before dividing the numerator by the denominator.

BEDMAS
B brackets ( )
E exponents 3^{2}
D division ÷
M multiplication X
A addition +
S subtraction 