Each time you visit the NRICH site there are usually some activities which are 'live'. This means we are inviting students to send us solutions, and we will publish a selection of them, along with each student's name and their school, a few weeks later. If you'd like to know more about what we're looking for, read this short article.
The last date for submitting solutions to the live problems is Friday 27 March.
Live problems
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problemFavouriteMaking Sticks
Age5 to 7Challenge level
Kimie and Sebastian were making sticks from interlocking cubes and lining them up. Can they make their lines the same length? Can they make any other lines?
Recently solved problems
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problemFavouriteDoughnut Percents
Age7 to 14Challenge level
Can you make doughnuts by matching these fractions, decimals and percentages?
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problemFavouriteLess Is More
Age7 to 11Challenge level
Use your knowledge of place value to try to win this game. How will you maximise your score?
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problemFavouritePlay to 37
Age7 to 11Challenge level
In this game the winner is the first to make the total 37. Is this a fair game?