In the classical period, Ottoman mathematical texts written by bookkeepers were one step ahead of other general calculation (arithmetical) books of this period regarding containing decimal fractions and root extraction methods.In addition, the contributions about Leather Baseball Keychain Gift Box numeric analysis made in both the eastern and western civilizations of the middle ages are greatly progressed in these texts.Pir Mahmud Sıdkı Edirnevi’s book stands out from other mathematical texts written by bookkeepers Car Mounts in terms of including exact and approximate root extraction.In our study, through analyzing approximate root extraction methods in this book, the leading role of Edirnevi is emphasized with the help of the manuscript copy of the text and secondary other references.