1. Welcome

2. Revision of skills

5. Finding Fractions of Amounts
A quick way to remember what to do is:
“Divide by the bottom, times by the top”

6. Finding Fractions of Amounts2 7
If you are asked for of an amount 1 7 2 7
Find by dividing by 7 and then find by multiplying by 2. 2 7
To find of 35:
35 ÷ 7 = x 2 = 10 2 7
of 35 is 10

7. Finding Fractions of Amounts5 9
If you are asked for of an amount 1 9 5 9
Find by dividing by 9 and then find by multiplying by 5. 5 9
To find of 63:
63 ÷ 9 = x 7 = 35 5 9
of 63 = 35

8. With a calculator… The amount… Divide by 100
Multiply by the percentage stated in the question…
Find 37.5% of £120

10. Express a number as a percentage of another
One number as a percentage of another
identified number total amount ×100
Example
23 as a percentage of ×100
Could come up in task 3

11. Ethan is following a healthy diet plan and is allowed 3000 calories and 30 grams of fat a day. He is trying to decide what to have for his lunch. If he chooses a chicken sandwich what percentage of his daily allowance of fat will that be?

13. To find the percentage change, you need to know this formula
Percentage change is where we discover what percentage an amount has increased or decreased by.
To find the percentage change, you need to know this formula
Difference in amounts (new value−original value) Original amount X 100

16. Individual study/ assessment prep