1. Numbers
Percentage of a number

2. Numbers
We will often be asked to work out the percentage of an amount without using a calculator

3. We can be clever about this to make it easy for ourselves…
Numbers
We can be clever about this to make it easy for ourselves…

4. We know that percent means out of 100.
Numbers
We know that percent means out of 100.
1% means 1 out of 100
1% of 100 = 1

5. Numbers
10% of 100 = 10
So if we can work out 1% of any number, we can multiply this by the percent we need to find

6. Numbers If 1% of 100 is 1 1% of 200 must be 2 1% of 150 must be 1.5
How are we doing this?

7. We are dividing our amount by 100 1% of 750 = 750 ÷ 100 = 7.5
Numbers
We are dividing our amount by 100
1% of 750 =
750 ÷ 100 = 7.5

8. If we know 1% of 750 is 7.5 then 2% of 750 must be 2 x 7.5 = 15
Numbers
If we know 1% of 750 is 7.5
then 2% of 750 must be
2 x 7.5 = 15

9. Numbers
What is 5% of 250?
1% of 250 is 2.5
5 x 2.5 is 12.5

10. Numbers
It is going to take some doing to remember all of this, so lets start by getting used to working out 1% of some numbers