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 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 Friday 18 May. 

Next-door Numbers

Stage: 1 Challenge Level: Challenge Level:1

Florence, Ethan and Alma have each added together two 'next-door' numbers. What is the same about their answers?

Light the Lights

Stage: 1 Challenge Level: Challenge Level:2 Challenge Level:2

Investigate which numbers make these lights come on. What is the smallest number you can find that lights up all the lights?

How Would We Count?

Stage: 1 and 2 Challenge Level: Challenge Level:1

An activity centred around observations of dots and how we visualise number arrangement patterns.

Square Surprise

Stage: 1 and 2 Challenge Level: Challenge Level:1

Why do you think that the red player chose that particular dot in this game of Seeing Squares?

Pouring Problem

Stage: 2 Challenge Level: Challenge Level:2 Challenge Level:2

What do you think is going to happen in this video clip? Are you surprised?

Subtraction Surprise

Stage: 2 and 3 Challenge Level: Challenge Level:1

Try out some calculations. Are you surprised by the results?

Consecutive Numbers

Stage: 2 and 3 Challenge Level: Challenge Level:1

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

Stage 1 and 2 Toughnuts

Stage: 1 and 2

These Stage 1 and 2 problems haven't been solved yet. Why not take a look?