In the mathematical text Zhoubi Suanjing , dated prior to 300 BC , and the Nine Chapters on the Mathematical Art , multiplication calculations were written out in words .
The early Chinese mathematicians employed Rod calculus involving place value addition .
In the mathematical text Zhoubi Suanjing , dated prior to 300 BC , and the Nine Chapters on the Mathematical Art , multiplication calculations were written out in words , although the early Chinese mathematicians employed Rod calculus involving place value addition .