The idea of this book is to help build confidence with maths via a series of tests and puzzles.  After a gentle ''warm-up'' section, the puzzles and tests get progressively more challenging over the course of the book.  There is a hints section for readers who get stuck, as well as a complete set of answers for every test at the back of the book.

After the ''warm-up'' section, there are puzzles and tests on ''lateral thinking'', ''fun with numbers'',  ''logic puzzles'', ''geometrical puzzles'' and ''difficult puzzles''. Readers will soon become familiar and comfortable with a range of tricks and tests, from magic number squares to Fibonacci numbers.