This full-colour book contains four different exciting adventure stories with an interactive twist In order to progress through each story the reader must solve a series of fun maths puzzles. Help the Infinity Squad to save Prime City from the evil Doc Zero... work with Anna Kadabra to solve the riddle of the Division Dragon... blast into space with Haley Comet and the Mathstronauts... and explore the mysterious city of El Numero Suitable for readers aged 7 and up.