1. find the fraction of a quantity
L.O. To be able to
find the fraction of a quantity

2. 3 55 of 5 ‘Whole number ÷ denominator x numerator’ Numerator

3. 55 boxes 5 11

4. Let’s divide the 55 boxes into 5 parts

5. We must choose 3 out of these 5 parts
33 boxes!

6. Let’s try one... 3 5 of 5 ÷ 33 = x
Denominator
Numerator
Whole number

7. Another one... 4 5 6 of 7 ÷ 32 = x
Denominator
Numerator
Whole number

8. ÷ = 6 8 1 of 9 54 x Follow the formula and it’s easy... Denominator
Numerator
Whole number

9. Last one... 9 9 6 of 12 ÷ 72 = x
Denominator
Numerator
Whole number

10. Important Note
When you are finding a fraction of a whole quantity you are finding a part of that quantity, so:
The UNITS of your answer will be the SAME as the units of the whole quantity
Your answer will ALWAYS be SMALLER than the whole quantity, because it is part of it!

11. 3 55kg of 5 ‘Whole number ÷ denominator x numerator’
Always use this formula for finding fractions of whole numbers:
‘Whole number ÷ denominator x numerator’
Numerator 3 5
55kg of
Denominator
Whole number

12. ÷ = 3 5 of 5 33kg x Let’s try one... Denominator Numerator
Whole number

13. Question1
What is ½ of 36 B 16 A 9 C 12 D 18

14. Question 2
What is 1/5 of 25? B 10 A 5 C 20 15 D

15. Question 3
Calculate 4/5 of 50 A 20 B
250 C 40 15 D

16. Which of the following is 3/5 of 35?
Question 4
Which of the following
is 3/5 of 35? A 20 B 21 C 7 6 D

17. Fraction of a Quantity CW Worksheet
Let’s work through it together…
Write the Fraction
Write the Quantity
Write the Fraction of the Quantity
Show Working
Write Answer

18. Early Finishers Play Mathman 
Homework:
Pg 90 Exericse 6k No.11 and No.12