Primary 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 your 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 our live problems is Monday 17 May.

Tables Teaserlive

Age 5 to 7
Challenge Level

How will you work out which numbers have been used to create this multiplication square?

Largest Evenlive

Age 5 to 7
Challenge Level

How would you create the largest possible two-digit even number from the digit I've given you and one of your choice?

Dicey Arraylive

Age 5 to 11
Challenge Level

Watch the video of this game being played. Can you work out the rules? Which dice totals are good to get, and why?

Light the Lights Againlive

Age 7 to 11
Challenge Level

Each light in this interactivity turns on according to a rule. What happens when you enter different numbers? Can you find the smallest number that lights up all four lights?

Dozenslive

Age 7 to 14
Challenge Level

Can you select the missing digit(s) to find the largest multiple?