Best buys
1. Carrots cost £1 for a 1.2 kg bag at
Tesco. The same type of carrots cost
77 pence for a 700 g bag at ASDA.
Where are the Carrots better value?
2. Potatoes cost £9 for a 12.5 kg bag at
a farm shop. The same type of
potatoes cost £1.83 for a 2.5 kg bag
at a supermarket. Where are the
potatoes the better value, at the farm
shop or at the supermarket?
Solving problems involving
ratios
1. A piece of wood is of length 45
cm. The length is divided in the
ratio 7 : 2 . Work out the length of
each part.
Adding and subtracting
fractions
1. Work out +
2. Work out
+
2. Work out
1.
Work out 2 × (11 + 9)
2.
Work out (2 + 3) × 4 + 5
3.
Work out the value of 52 + 2 3
4.
Write down the value of
Fractions of an amount
Negative numbers
Work these out and write down all
the numbers on your calculator
1. A class has 29 students. 16 of the
students are girls. What fraction of
the students are boys?
The table shows the temperature in
each of 6 cities on 1st January 2003.
a) Write down the name of the city
which had the lowest temperature.
b) Work out the difference in
temperature between Copenhagen
and Cairo.
c) On 2nd January 2003, the
temperature in Moscow had
increased by 4 oC. Work out the
new temperature in Moscow.
2. A school has 1200 pupils. 575 of
these pupils are girls. of the girls
like sport. of the boys like sport.
Work out the total number of pupils
in the school who like sport.
Percentages of amounts
Joe buys a can of cola and a roll. Work
out the total cost.
1. There are 800 students at Prestfield
School. 45% of these 800 students
are girls. Work out how many are
girls.
document
BiDMAS, powers and square
roots
Using a calculator
Money problems
Pete’s Café - Price List
Cup of Tea 75p
Cup of Coffee 85p
Can of Cola 75p Roll £1.70
Sandwich £1.35
÷
3. Work out +
2. Pat and Julie share some money in
the ratio 2 : 5. Julie gets £45 more
than Pat. How much money did
Pat get?
Kim buys a cup of coffee and a roll. She
pays with a £5 note.
How much change should she get?
Multiplying and dividing
fractions
1. Work out x
2. Calculate 36% of £4500 using a
calculator
Fractions, decimals,
percentages
Write these in order of size.
Start with the smallest fraction.