I Used to Know That: Maths by Chris Waring is a handy refresher for anyone who wants to reconnect with the basics of mathematics. Written in a friendly, accessible style, it brings back key concepts, formulas, and problem-solving ideas that many readers may have learned at school and since forgotten.
Ideal for curious minds, students, and adults looking for a quick confidence boost, this book makes maths feel less intimidating and more practical. It is a useful pick for revision, general knowledge, or simply sharpening your numerical skills with bite-sized explanations and a clear approach.
