Birdwatch Note Rating
2023-05-20 14:03:27 UTC - HELPFUL
Rated by Participant: F60D7253D4280CC8F6DACACD559E1B3186C5017DD7315048D69D68AE62669633
Participant Details
Original Note:
This has been called as “Japanese calculation”, but it is called as “Ancient Indian method” in Japan actually. And called as “Chinese stick method” in internet, too. The is a movement to clarify its roots, however the correct answer has not been reached as attached links. https://math.stackexchange.com/questions/877120/what-is-the-origin-of-how-the-japanese-multiply-line-multiplication https://hsm.stackexchange.com/questions/9902/what-is-the-origin-of-the-chinese-stick-multiplication-method
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