Number Teasers

Number Teasers

At the start of a new term, we hope you're ready for some puzzling number problems. You'll need to make sense of them by exploring, predicting and explaining.
We're looking forward to receiving your solutions!

Making a Difference 

Age 11 to 14
Challenge Level
How many different differences can you make?

Beach Huts 

Age 11 to 14
Challenge Level
Can you figure out how sequences of beach huts are generated?

Reversals 

Age 11 to 14
Challenge Level
Where should you start, if you want to finish back where you started?

Puzzling Place Value 

Age 14 to 16
Challenge Level
Can you explain what is going on in these puzzling number tricks?

Related

The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.
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NRICH is part of the family of activities in the Millennium Mathematics Project.