pemdas

1. Order ofOrder of
OperationsOperations
( ) +
X-
÷

2. The Order of
Operations tells us
how to do a math
problem with more
than one operation,
in the correct order.

3. Please Excuse My Dear
Aunt Sally
This will
help to you
to remember
the order of
operations.

4. Add +
Multiply x
Divide ÷
Please Excuse My Dear Aunt Sally
P
E
M
D
A
S
Parentheses ( )
Exponents 43

5. Please Excuse My Dear Aunt Sally
Parentheses ( )
Always do
parentheses
1st
.

6. Please Excuse My Dear Aunt Sally
Exponents 43
Always do
Exponents
2nd
.

7. Multiply x
Divide ÷
Please Excuse My Dear Aunt Sally
Do
multiplication
and division
3rd
, from left to
right.

8. Add +
Subtract -
Please Excuse My Dear Aunt Sally
Do addition
and
subtraction
4th, from left
to right.

9. Let’s TryLet’s Try
SomeSome 
Problems!Problems!

10. PEMDAS
3+8- (9+1)
3+8- 10
3+8-10
11-10
1

11. PEMDAS
3 (9+1) + 36
3(10)+36
3(10)+36
30+36
66

12. PEMDAS
4+5 x (6-2)
4+5 x 4
4+20
24

13. PEMDAS
4+ 10 x 8 -16
4+10 x 8 -16
4+ 80 -16
84-16
68

14. PEMDAS
21 + 100÷ 10
21+100÷10
21 + 10
31

15. PEMDAS
40+48-2 x 5
40+48–2 x 5
40+48- 10
88 - 10
78

16. PEMDAS
64 ÷ (9 x 3-19)
64÷(27 –19)
64 ÷ 8
8

17. Have fun doingHave fun doing
the Order ofthe Order of 
Operations!Operations!