This book has been specifically updated for Key Stage 4 GCSE and is written by the bestselling mathematics revision guide authors whose previous GCSE revision guide sold in excess of 3/4 million copies. It meets the needs of the estimated 500,000-plus examination candidates who sit the GCSE examination in 1993/4 and onwards. Revise Mathematics is designed and tested to bring your customers success in GCSE Key Stage 4: