Resources tagged with: Percentages

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There are 15 results

Broad Topics > Fractions, Decimals, Percentages, Ratio and Proportion > Percentages

Percentage Unchanged

Age 14 to 16 ShortChallenge Level

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

A Change in Code

Age 14 to 16Challenge 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 16Challenge Level

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

The Legacy

Age 14 to 16Challenge 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?

Doughnut Percents

Age 7 to 14Challenge 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.

Mathland Election

Age 11 to 14Challenge 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.

Round and Round

Age 14 to 16Challenge Level

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

Pineapple Juice

Age 14 to 16 ShortChallenge Level

What percentage of this orange drink is juice?

Matching Fractions, Decimals and Percentages

Age 7 to 14Challenge Level

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

Circle Packing

Age 14 to 16Challenge 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? ...

Put Out the Flags

Age 11 to 14Challenge Level

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

Fractions and Percentages Card Game

Age 11 to 16Challenge Level

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

Trusting the Tabloids

Age 11 to 16Challenge Level

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