1. How do you feel about Long Division?
Would you like to go over any one of the questions?

2. BIdMas By the end of the lesson, we will be able to:
understand that we don’t always go from left to right to simplify an expression
understand what each of the letters in BIDMAS stand for and how they can help with working mixed operations
simplify expressions to one value using the correct order of operations

3. When lots of things happen in a sum we can’t go left to right.
Think about this sum..
= 35?
3 + 4 x 5
Nope!
When lots of things happen in a sum we can’t go left to right.
You should get 23

4. What Does BIDMAS Stand for?
rackets
ndices x2
RANK EQUALLY
ivide
ultiply -
ubtract dd

5. Let’s do some examples of how to use BIDMAS
A good tip is to underline the bit you are going to work, then write the answer under your line, along with the rest of the sum.

6. B I D M A S 4) (3
x 2
x 2 + = 7 = 14

7. B I D M A S 3 3 4
x 2 + + = 8 = 11

8. B I D M A S 3 3 4
x 3
- 2
- 2 = + + 12 = 13

9. Steps to Success
Simplify the brackets first, use BIDMAS within the brackets if necessary
Simplify the numbers in index form
Simplify the division and multiplication in the order that is possible
Then do the addition and subtraction in the order that is possible
If some of the steps above are not applicable, move to the next one

10. 10 – 8 ÷ 2 = 1 6 x
Who do you agree with?

11. 20 ÷ = 10 3 x
Who do you agree with?

12. x 2 = 14 34 x
Who do you agree with?

13. 3 + 4 x 3 + 1 = 19 Ralph’s sum is wrong
We can make it right be adding a pair of brackets. Where do they need to go?

14. 3 + 4 x 3 + 1 = 19 ( ) Ralph’s sum is wrong
( )
Ralph’s sum is wrong
We can make it right be adding a pair of brackets. Where do they need to go?

15. 1. Practise makes Perfect!
b) 25 ÷ 5 – 1
c) 2 x
d) (5 x 4) + 2
ANSWERS 2 4 32 22