Fractions 3
Fractions of Quantities

Now we start to use fractions in a practical way.

Worked Examples

1

You can, of course, do this practically, but it is much easier to work out

(a)

Find of £30.

Show me
× £30 = £30 ÷ 5
= £
= £6
(b)

Find of £30

Show me
× £30 = £6
× £30 = 4 × £6
= £24

Exercises

Find:

(a)
of 12
(b)
of 8
(c)
of 15
(d)
of 12
(e)
of 30
(f)
of 40
(g)
of 14
(h)
of 64
(i)
of 40
(j)
of 24
(k)
of 32
(l)
of 36

Find:

(a)
of 24
(b)
of 20
(c)
of 14
(d)
of 18
(e)
of 30
(f)
of 28
(g)
of 15
(h)
of 45
(i)
of 64
(j)
of 36
(k)
of 45
(l)
of 56

In a test there are 30 marks. Nasir gets of the marks. How many marks does he get?

marks

In a school of the pupils are girls. There are 382 pupils in the school. How many girls are there in the school?

girls

In a class there are 32 pupils. Of these, come to school by bus. How many pupils come to school by bus?

pupils

In a school, of the pupils have pets. There are 510 pupils in the school.

(a)

How many of them have pets?

pupils
(b)

How many of them do not have pets?

pupils

There are 20 houses in a street and of them have satellite TV. How many of these houses do not have satellite TV?

houses

Rachel has 360 stamps in her stamp collection. of these stamps are foreign. How many foreign stamps has she got?

foreign stamps

Ben and Chris sell their old toys at a car boot sale. They get £45. They agree that Ben will have of the money and Chris the rest. How much do they each get?

Ben: £

Chris: £

In a school there are 550 pupils. If of the pupils are left-handed, how many left-handed pupils are there in the school?

pupils