# Math Symbols and Order of Operations Notes

```Ch. 1 Common ‘Squares’
12 = 1
22 = 4
32 = 9
42 = 16
52 = 25
62 = 36
72 = 49
82 = 64
92 = 81
102 = 100
Ch. 1 Math Symbols and Words
+
Subtract
Combine
Plus
Sum
Take Away
Minus
Difference
or ( )
Multiply
/
Divide
Times
Product
Groups of
Quotient
=
Equals
Find the value
Is
Solve
Evaluate
Ch. 1 Order of Operations
P
E
M
D
A
S
Please Excuse My Dear Aunt Sally
Parentheses, Exponents, Multiplication or Division, Addition or Subtraction
(whichever comes first)
Steps:
 If the problem has parentheses, you must do that first.
 If there is multiple things inside the parentheses do those in order according to
PEMDAS.
 After doing a part of the problem, cross that out and always write what you have
left underneath (in steps)
 Then check for exponents
 Then check for multiplication or division…whichever comes first, do that.
 Do the same for addition and subtraction.
Ex. 4 + 9 – (2 +6) + 3
4+9–8+3
13 – 8 + 3
5+3=8
Ex. 24 + (81-50) + 52
24 + 31 + 52
16 + 31 + 52
47 + 52 = 99
Ex. (20 – 15)2 2 + 4
(5) 2 2 + 4
25 2 + 4
50 + 4 = 54
```