Sakhāqī’s Book [of Arithmetic]
This work is a tutorial text on elementary arithmetic, in 20 folios. It is divided into an introduction, 11 chapters, and a conclusion. In the beginning, the sign for zero is introduced, along with the nine Indian numerals, written in two alternative forms. This is followed by a presentation of the place system. The first four chapters cover, respectively, addition, subtraction, multiplication, and division. Chapter five introduces operations on non-whole numbers. The remaining six chapters discuss fractions and operations on them.