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Our good friend and champion of mathematics, Rob Eastaway is a celebrated author of popular maths books and we're delighted to get our hands on a batch of his new book, all signed by Rob.
Maths on the Back of an Envelope by Rob Eastaway
Packed with amusing anecdotes, quizzes and handy calculation tips, this is an invaluable introduction to the art of estimation, and a welcome reminder that sometimes our own brain is the best tool we have to deal with numbers
Price = p168 pence = £9.97