1. Percentages
Mr. Hendy Industries

2. Be able to calculate a percentage of a given number
Learning Goal
Be able to calculate a percentage of a given number

3. So how do we calculate percentages?
Step 1: Take the percentage number you want to find:
Like 40%
Step 2: Then move the decimal point to the left TWICE
So 40% becomes 0.40

4. Step 3: Take your new decimal number and multiply it with the number or dollar amount you already know.
So, 40% of $60 = 60 x 0.4 = 24 or $24

5. 10% of 40

6. 40 x 0.1 = ?

7. 4

8. 45% of 75

9. 75 x 0.45 = ?

10. 33.75

11. 120% of 14

12. 14 x 1.2 = ?

13. 16.8

14. Find a Number FROM a Percentage

15. Step 1: Take the percentage number you know:
Like 40%
Step 2: Then move the decimal point to the left TWICE
So 40% becomes 0.40

16. Step 3: Divide the number you have by the decimal form of the percentage
So, 60 is 40% of what number? 60 ÷ 0.4 = 150

17. 72 is 30% of ?

18. 72 ÷ 0.3 = ?

19. 240

20. 25% of what
number is 15?

21. 15 ÷ 0.25 = ?

22. 60

23. 12.5 is 62.7% of
What number?

24. 12.5 ÷ = ?

25. 19.9