How to Multiply

Japanese multiplication maths trick. How to multiply two numbers together using a simple visual lines diagram technique. Perfect to help anyone struggling with arithmetic.

Larger numbers can also be calculated using the same principle if you follow the same rules.

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Music: Deliberate Thought – Kevin MacLeod (


50 thoughts on “How to Multiply”

  1. This is equivalent to the standard method we learn at primary school. To see why, use larger digits like 89 x 78 and notice that, instead of counting intersections, you'll be multiplying digits, carrying and adding the carry to the next column – just like you do in the standard method. The difference is the standard method is quicker. It is quicker to write the digit '9' than it is to draw nine lines.

  2. ๐Ÿ˜Š๐Ÿ˜ โ„•๐•ฆ๐•ž๐•“๐•–๐•ฃrrr ๐Ÿฃ ๐“ˆ๐‘’๐’ธ๐“‡๐‘’๐“‰ ๐™ฉ๐™ค ๐“‚๐’ถ๐“ƒ๐’พ๐’ป๐‘’๐“ˆ๐“‰ ๐™ฎ๐™ค๐™ช๐™ง dream ๐•๐•š๐•—๐•– ๐Ÿ˜Š๐Ÿ˜ > >> ๐Ÿ˜Š๐Ÿ˜ 2093

  3. I prefer the basic method. ๐Ÿ˜‚๐Ÿ˜‚ This one's hard for me especially when I'm doing an oral one I can't image this one with big numbers.๐Ÿคฆ

  4. Great video, very visual and clear to understand. I attempted to use this method with higher digits (i.e 38 x 29) and got completely lost at where to separate the zones with so many lines all over the place ๐Ÿ˜‚

  5. Not useless my friend but actually very functional for those of us that see and interface with the world visually. Thanks for the video I loved it.

  6. ์–ด๋–ป๊ฒŒํ–ˆ๋…ธ ์”จ๋ฐ”ใ„น๋ จ์•„ ใ„ทใ„ท
    ์ด๋Ÿฐ ๋Œ์•„์ด๊ฐ™์€ ๊ณ„์‚ฐ๋ฒ•์€ ๋ญ์ง€ใ…‹ใ…‹ใ…‹
    ์ถฉ๊ฒฉ์ ์ด๋‹ค

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