1. ORDER OF OPERATIONS
BIDMAS

2. 3 + 2 x 4
= 11
3 + 2 x 4
= 20
(3 + 2) x 4 = 20

3. Order of Operations Step 1 – Solve brackets
Step 2 – Solve multiplication and division from left to right
Step 3 – Solve addition and subtraction from left to right

4. BIDMAS 1 2 3 BRACKETS 1 DIVIDE or MULTIPLY from left to right 2
ADD or SUBTRACT
from left to right 3

5. BIDMAS = 2 + 12 = 14 Example 1 2 + 3  4 Step 1 – No brackets
Step 2 – Multiply
= 2 + 12
Step 3 – Add
= 14

6. BIDMAS = 2 + 12  2 = 2 + = 8 Example 2 2 + 3  4  2 6
Step 1 – No brackets
Step 2 – Multiply then divide
= 2 + 12
 2
= 2 + 6
Step 3 - Add
= 8

7. BIDMAS 6 Example 3 2  3 - ( 4 + 2 ) = 2  3 - = 6 - 6 = 0
Step 1 – Solve Brackets
= 2  3 - 6
Step 2 - Multiply
= 6
- 6
Step 3 - Subtract
= 0

8. If you have mastered the order of operations so far, let’s add the final piece ...
BIDMAS
INDICES (Squares, Cubes & Other Powers)

9. Order of Operations Revised
Step 1 – Solve brackets
Step 2 – Solve indices
Step 3 – Solve multiplication and division from left to right
Step 4 – Solve addition and subtraction from left to right

10. BIDMAS = 7 + 100 = 7 + 300 = 307 Example 4 7 + 102  3  3
Step 1 – No brackets
Step 2 – Solve index
= 7 +
100
 3
Step 3 – Multiply
= 7 +
300
Step 4 – Add
= 307

11. BIDMAS = 23  8 - 8 = 8  8 - 8 = 64 - 8 = 56 Example 5
23  ( 48  6 ) - 8
Step 1 – Solve brackets
= 23  8
- 8
Step 2 – Solve index
= 8
 8 - 8
Step 3 - Multiply
= 64
- 8
Step 4 - Subtract
= 56

12. BIDMAS 2 ) 2 3 2 9 + 9 = 37 Example 6 7  4 + ( 5 – 12  6 ) 2
Step 1 – Brackets: divide then subtract
= 7  4 + ( 5 –
2 ) 2
= 7  4 +
3 2
Step 2 – Solve index
= 7  4 + 9
Step 3 – Multiply
= 28
+ 9
= 37
Step 4 – Add