
Addition and subtraction
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problem
Number pyramids
Try entering different sets of numbers in the number pyramids. How does the total at the top change?
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game
Twenty20
Fancy a game of cricket? Here is a mathematical version you can play indoors without breaking any windows. -
problem
Dicey addition
In these addition games, you'll need to think strategically to get closest to the target.
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problem
Can you make 100?
How many ways can you find to put in operation signs (+, −, ×, ÷) to make 100?
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problem
This Pied Piper of Hamelin
Investigate the different numbers of people and rats there could have been if you know how many legs there are altogether!
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problem
What was in the box?
This box does something to the numbers that go into it. If you know the numbers that come out, what might be going on inside the box?
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problem
Journeys in Numberland
Tom and Ben visited Numberland. Use the maps to work out the number of points each of their routes scores.
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problem
The add and take-away path
Two children made up a game as they walked along the garden paths. Can you find out their scores? Can you find some paths of your own?