Rapid arithmetic quick and special methods in arithmetical calculation This book, "Rapid arithmetic quick and special methods in arithmetical calculation", by T. O'Conor Sloane, is a replication of a book originally published before 1922. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.