Percentages

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

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?

You are organising a school trip and you need to write a letter to parents to let them know about the day. Use the cards to gather all the information you need.

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

Weekly Problem 12 - 2010
Can Emily increase her average test score to more than $80$%? Find out how many more tests she must take to do so.

If this class contains between $45$% and $50$% girls, what is the smallest possible number of girls in the class?

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?

Weekly Problem 16 - 2008
A 30cm x 40cm page of a book includes a 2cm margin on each side... What percentage of the page is occupied by the margins?