1

1. Order of OperationsOrder of Operations
( ) +
X
-
43 ÷
Created by Richard Bull

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

3. BIDMAS
This will
help to you
to remember
the order of
operations.

4. Add +
Divide ÷
Multiply
x
BIDMAS
B
I
D
M
A
S
Brackets ( )
Indicies 43

5. BIDMAS
Brackets ( )
Always do
brackets
1st.

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

7. Divide ÷
Multiply x
Please Excuse My Dear Aunt Sally
Do division and
multiplication
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+23- (9+1)
3+23- 10
3+8-10
11-10
1

11. PEMDAS
3 (9+1) + 62
3(10)+62
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 23 -16
4+10 x 8 -16
4+ 80 -16
84-16
68

14. PEMDAS
21 + 102 ÷ 10
21+100÷10
21 + 10
31

15. PEMDAS
10+72-2 x 5
10+49–2 x 5
10+49- 10
59 - 10
49

16. PEMDAS
64 ÷ (9 x 3-19)
64÷(27 –19)
64 ÷ 8
8
Created by Richard Bu
Created by Richard Bull