1. Order of Operations
STES

2. Please Excuse My Dear Aunt Sally
P = Parenthesis
E = Exponents
M = Multiply
D = Divide
A = Add
S = Subtract

3. This is the order: There are 4 levels. Do the top levels first.
1. Parenthesis
2. Exponents
3. Multiply and divide, from left to right.
4. Add and subtract, from left to right.

4. Example 1
In PEMDAS, multiply (and divide) comes before adding and subtracting.
3 + 2 x 6 - 7
Now, we just have adding and subtracting, so go left to right.
15 - 7
Answer 8

5. 8 + (3 x 4) - 13 8 + 12 - 13 20 - 13 7 Answer Example 2
Parentheses first
Now, since we have adding and subtracting, just go left to right. 7
Answer

6. 34 - (4 x 10) + 3 34 - 40 + 3 81 - 40 + 3 41 + 3 44 Example 3 Answer
Now, the exponent comes first (PEMDAS). Remember, 34 is 3 x 3 x 3 x 3.
41 + 3
Now we’re down to adding and subtracting, so go left to right. 44
Answer

7. Your Turn