Percentages

problem
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
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
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
Mathland election

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.
problem
Round and round

Age

14 to 16

Challenge level

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

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? ...
problem
Are you a smart shopper?

Age

7 to 11

Challenge level

In a town there are three supermarkets which each have a special deal on some products. If you bought all your shopping in one shop, which would be the cheapest?
article
Roasting old chestnuts 4

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

Age

14 to 16

Challenge level

What percentage of this orange drink is juice?
problem
Trusting the tabloids

Age

11 to 16

Challenge level

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