Numbers are all around us but why are they important? This book finds out what numbers are, from how we count them, to what are prime and base numbers and takes you upto the really big ones - millions, billions and to infinity and beyond. You'll also explore some really strange numbers, find out about your body in numbers and get to grips with roman numerals. Plus, there are fun quizzes to help you test your knowledge.The book is part of the Maths is Everywhere series, which demystifies all aspects of maths and shows how it relates to your everyday world with fun, colourful graphics. These are fantastic books for children aged nine plus who are studying maths, or for anyone who wants to get to grips with maths in a fun way.