Percentages

problem
Antiques roadshow

Age

14 to 16

Challenge level

Last year, on the television programme Antiques Roadshow... work out the approximate profit.
problem
Percentage swap

Age

14 to 16

Challenge level

What is 50% of 2007 plus 2007% of 50?
problem
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?
problem
Porridge

Age

14 to 16

Challenge level

To make porridge, Goldilocks mixes oats and wheat bran..... what percentage of the mix is wheat?
problem
Antifreeze

Age

14 to 16

Challenge level

How much more antifreeze is needed to make the proportion 30%?
problem
Pied Piper

Age

14 to 16

Challenge level

How many rats did the Pied Piper catch?
problem
A change in code

Age

14 to 16

Challenge level

Can you find the percentage increase if the results appear in code?
problem
Fractions and percentages card game

Age

11 to 16

Challenge level

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

Age

7 to 11

Challenge level

Go through the maze, collecting and losing your money as you go. Which route gives you the highest return? And the lowest?
problem
You never get a six

Age

7 to 11

Challenge level

Charlie thinks that a six comes up less often than the other numbers on the dice. Have a look at the results of the test his class did to see if he was right.