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# An Unexpected Method of Multiplication Is Offered by Arnold from "Hey Arnold!"
- URL: https://theparnassian.com/en/neozhidannyi-sposob-umnozheniia-predlagaet-arnold-iz-ei-arnolda/
- Published: 2024-05-27T08:03:34.000Z
- Updated: 2026-10-01T05:33:41.000Z
- Author: Alexandr Radayev
- Tags: Cinema, Observations, Education, Pop Culture

An unexpected method of multiplication is offered by Arnold from "Hey Arnold!". The method works for multiplying by 9 and, it would seem, corresponds to an old Chinese rule of multiplying on the fingers:

*To obtain the result of multiplying by nine, hold both hands open and fold down the finger whose number corresponds to the number being multiplied; the number of fingers remaining to the left gives the tens in the resulting number, and the number of fingers remaining to the right gives the units.*

But how the notation proposed by Arnold actually works, I have not quite understood. If anyone knows, I await an explanation.