Book excerpt: All trainee teachers working towards Qualified Teacher Status (QTS) must pass a computerized numeracy skills test. The test is designed to ensure they have a sound grasp of numeracy skills such as mental arithmetic and interpreting statistics, and can apply these in practice. This book outlines all of the test requirements and explains the essential subject knowledge. This Fifth Edition is updated throughout and includes a full practice test. Written by one of the authors of the actual skills tests, from the Alphaplus Consultancy, this text is an accurate, up-to-date and comprehensive practice tool for the numeracy skills test.