The children in Year 4 joined classes across the UK for the NSPCC fundraising Number Day.
As well as dressing up for digits, we learnt about the huge impact that maths has on our lives and on our history.
We learnt about the work of Alan Turing and the code-breakers at Bletchley Park, whose mathematical skill brought an early end to the second World War and saved millions of lives.
We then became code-breakers ourselves to puzzle out the riddles and break the cipher.
The design of the Bank of England’s £50 note features the mathematician Alan Turing.
