Each time students visit the NRICH site there will be some activities which are 'live'. That means we are inviting students to send us their solutions and we will publish a selection of them, along with their name and school's name. If you'd like to know more about what we're looking for, read this short article.
The last day for sending in solutions to these live problems is Monday 27 November.
problem
More less is more
Age
7 to 14
Challenge level
In each of these games, you will need a little bit of luck and your knowledge of place value to develop a winning strategy.
problem
Doughnut percents
Age
7 to 14
Challenge level
Can you work as a team to make doughnuts by matching these fractions, decimals and percentages?
problem
Negative powers
Age
14 to 18
Challenge level
What does this number mean? Which order of 1, 2, 3 and 4 makes the highest value? Which makes the lowest?