Download or read book The I Used to Know That: Maths Activity Book written by Daniel Smith and published by Michael O'Mara. This book was released on 2017-01-19 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The I Used to Know That: Maths Activity Book is a guide designed to take the fear out of maths. Guiding you through the all basics and beyond, this book is full of clear and simple explanations with enjoyable exercises to help square your knowledge.