This is part two of order of operations. Please see part1 for the beginning. Here is the second example. We are going to run through parenthesis first. Six plus three is nine, add and I bring down the square minus eight divided by four, times three. Let’s work the exponent next. Nine squared is nine times nine, which is eighty one don’t be fooled it is nine times nine not nine times two. From here we will move to multiplication and division Remember to go from left to right, I have division first so I divide first before I multiply. The next step is to multiply, because you always multiply before adding and subtracting, so two times three is six, eighty one minus six would be seventy five. That the second example in order of operations. Check the practice link for more practice problems.
If you are trying to solve (6+3)^(2 )-8÷4x3 where do you start? Fortunatly the rules for the order of operations have been around for hundreds of years to help eliminate the guesswork. A very common method to remember the order of operations is PEMDAS, which most people remember by using the expression " Please Excuse My Dear Aunt Sally"
P = Parentheses
Always work Multiplication,Division,Addition,and Subtraction from Left to Right
Here are two examples from the video:
Step 1 Parentheses in this example (3+1)=4
Step 2 Exponents 4 squared is 16
Step 3 Multiplication 5 x 16=80
Step 3 Division 8 divided by 4 =2 Remember you work from left to right so the division is before the multiplication
Step 2 Exponents 9 squared = 81
Step 1 Parentheses in this example (6+3) = 9
Step 4 Multiplication 2x3=6 and finally subtraction 81-6=75