Wednesday, 22 August 2012

Maths

Fractions of Quantities

We have been learning about fractions.  Here are some things for you to try out and practise at home...

Problem Solving

1.       In an orchard 1/5 of the trees need pruning.  There are 65 trees, how many need pruning?

2.       1/3 of people surveyed voted ‘yes’ in the referendum.  If 42 people were surveyed how many voted yes?

3.       I have eaten 1/7 of the cakes in the box, if were 21 chocolates:
a) How many have I eaten?
b) How many are left?

4.       4/5 of the tickets for a Katy Perry concert have been sold.  If there are 2000 tickets how many have been sold?

5.       In a room 2/3 of the people are male.  If there are 60 people in the room how many:
a) men
b) women are there?

6.       A shop sold 2/3 of all their newspapers one morning.  The rest they returned.
a) How many did they sell?
b) How many did they return?

7.       In a car park 4/7 of the cars are silver.  There are 700 cars in the car park.
How many are NOT silver?

8.       If 9/10 of cats prefer Felix of the 500 surveyed how many do NOT prefer Felix?

Now for a really tricky one!

9.       1/3 of the people in a room are under 20.  If there are 15 under 20s how many over 20s are there?

10.   4/5 of Dek computers are faulty.  If the company has to repair 8000 one year how many did they sell?