This entertaining write-in book will make maths fun without ever feeling like a lesson.Use your number skills to make your way through mazes, crack codes, create art, catch crooks and solve all sorts of puzzles.Write, draw and colour in your answers as you practise key topics for ages 7-9, from times tables to fractions to mental arithmetic.Along the way, you'll also discover how your brain works and tips on how you can help it to work better.With all the answers in the back of the book.