Secondary Live Problems

Each time you visit the NRICH site there will be some activities which are 'live'. That means we are inviting you to send us your solutions and we will publish a selection of them, along with your name and school. If you'd like to read more about what we're looking for, read this short article.

This set of tasks will stop being live on Monday 25 March. 

Fruity Totalslive

Age 7 to 16 Challenge Level:

In this interactivity each fruit has a hidden value. Can you deduce what each one is worth?

Peaches Today, Peaches

Age 11 to 14 Challenge Level:

Whenever a monkey has peaches, he always keeps a fraction of them each day, gives the rest away, and then eats one. How long could he make his peaches last for?

What's it Worth?live

Age 11 to 16 Challenge Level:

There are lots of different methods to find out what the shapes are worth - how many can you find?

Cuboid Challengelive

Age 11 to 16 Challenge Level:

What's the largest volume of box you can make from a square of paper?

Tree Topslive

Age 14 to 16 Challenge Level:

Can you make sense of information about trees in order to maximise the profits of a forestry company?


Age 14 to 18 Challenge Level:

How can you quickly sort a suit of cards in order from Ace to King?

Secondary Toughnutslive

Age 11 to 18 Challenge Level:

These secondary problems have not yet been solved. Can you be the first?