Mixed Operation
Tips for Mixed Operation
There are three rules to be followed when doing mixed operation:
Rule 1: First perform any calculations inside parentheses.
Rule 2: Next perform all multiplications and divisions, working from left to right.
Rule 3: Lastly, perform all additions and subtractions, working from left to right.
Here is an example:
Evaluate 3 + 6 x (5 + 4) ?3  7 using the order of operations.
Solution:
Step 1: 3 + 6 x (5 + 4) ?3  7 = 3 + 6 x 9 ?3  7 Parentheses
Step 2: 3 + 6 x 9 ?3  7 = 3 + 54 ?3  7 Multiplication
Step 3: 3 + 54 ?3  7 = 3 + 18  7 Division
Step 4: 3 + 18  7 = 21  7 Addition
Step 5: 21  7 = 14 Subtraction
