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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!
If you enjoyed these challenges, you might also like to take a look at our Thinking Mathematically collection.