Multiplying two 2-digit numbers quickly

This video shows a technique for multiplying two 2-digit numbers together more quickly than most of us were taught in school. This approach generalizes to numbers with lots of digits.

See http://wildaboutmath.com for more fun Math stuff.

Category:

Science & Technology

Tags:

• Math
• mathcast
• arithmetic
• trick

[birogeri]

It's really great and easy to understand, thanks!

[DiZeKoner]

Been doing this process since 5-6th grade. I thought I was the only one who did this :P

[pickle5240]

the-way-i-learned-is-easier-i-­don't-get-the-adding-parts



[BOTDFfanXD]

This is even more confusing. The normal way is easier :(

[ezonerrdub]

YOUR THE MAN YOU HAVE NO IDEA HOW MUCH TROUBLE WITH MATH I HAVE AND NOW IM ACE'ING ALL THE PRACTICE PROBLEMS I CREATE!!!

[marcosmiketen]

hard but good :) !!!!!!!!!!!!!!!!!!!!!!!!!111

[auxbel]

I only got one right I need to a lot to practice I need this for a job :(

[zrap12]

thanks! really, i feel more comfortable doing multiplications, while doing it in a reasonable time!!

[Pretoriafly]

Great! :-)

[MultiLollpop]

i was working in compund interest i had a losts of multiplication there it just takes me half an hours to multiply....ufff. and here's the solution to my problem. Thanks Buddy.