# Resources tagged with: Percentages

### There are 15 results

Broad Topics >

Fractions, Decimals, Percentages, Ratio and Proportion > Percentages

##### Age 14 to 16 Challenge Level:

Prove that the shaded area of the semicircle is equal to the area of the inner circle.

##### Age 14 to 16 Challenge Level:

If a sum invested gains 10% each year how long before it has
doubled its value?

##### Age 14 to 16 Challenge Level:

Your school has been left a million pounds in the will of an ex-
pupil. What model of investment and spending would you use in order
to ensure the best return on the money?

##### Age 7 to 14 Challenge Level:

A task involving the equivalence between fractions, percentages and decimals which depends on members of the group noticing the needs of others and responding.

##### Age 14 to 16 Short Challenge Level:

What percentage of this orange drink is juice?

##### Age 11 to 14 Challenge Level:

A political commentator summed up an election result. Given that there were just four candidates and that the figures quoted were exact find the number of votes polled for each candidate.

##### Age 14 to 16 Challenge Level:

There are two sets of numbers. The second is the result of the
first after an increase by a constant percentage. How can you find
that percentage if one set of numbers is in code?

##### Age 14 to 16 Short Challenge Level:

If the base of a rectangle is increased by 10% and the area is unchanged, by what percentage is the width decreased by ?

##### Age 11 to 16

For teachers. Yet more school maths from long ago-interest and
percentages.

##### Age 7 to 14 Challenge Level:

Can you match pairs of fractions, decimals and percentages, and beat your previous scores?

##### Age 11 to 14 Challenge Level:

Tim and Beth both have a string of flags. Use the percentages to
find out who has the most flags.

##### Age 11 to 16 Challenge Level:

Can you find the pairs that represent the same amount of money?

##### Age 11 to 16 Challenge Level:

Can you match the cards and figure out whether the tabloid headlines can be trusted?

##### Age 11 to 14 Challenge Level:

When Charlie retires, he's looking forward to the quiet life, whereas Alison wants a busy and exciting retirement. Can you advise them on where they should go?

##### Age 14 to 16 Challenge Level:

Equal circles can be arranged so that each circle touches four or
six others. What percentage of the plane is covered by circles in
each packing pattern? ...