Here are twenty-four problems, one for each day in December, during the run-up to Christmas. The problems are ideal for working on collaboratively, either with friends at school, or with friends and family members at home.
After you've had a go at the day's problem, you can compare your approach to the solutions we have published, which are based on students' work.
We hope you enjoy working on them!
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If you enjoyed these challenges, you might also like to take a look at our Thinking Mathematically collection.