Percentages

problem

The magic number and the hepta-tree

Age

7 to 11

Challenge level

Find the exact difference between the largest ball and the smallest ball on the Hepta Tree and then use this to work out the MAGIC NUMBER!
problem
Favourite

Matching fractions, decimals and percentages

Age

7 to 14

Challenge level

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

Doughnut percents

Age

7 to 14

Challenge level

Can you make doughnuts by matching these fractions, decimals and percentages?
problem

Put out the flags

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.
problem

Retiring to paradise

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?
problem
Favourite

Fractions and percentages card game

Age

11 to 16

Challenge level

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

A change in code

Age

14 to 16

Challenge level

Can you find the percentage increase if the results appear in code?
problem

Pineapple juice

Age

14 to 16

Challenge level

What percentage of this orange drink is juice?
problem
Favourite

The legacy

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?
problem
Favourite

Dating made easier

Age

14 to 16

Challenge level

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