Multiplication on Abacus www.AbacusMaster.com

Multiplication technique on soroban abacus. Taken from AbacusMaster Tutorial.
General rules for multiplication
Multiplication of 2 digit numbers explanation with animated examples
Multiplication of 3 digit numbers explanation with animated examples

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[rezacatt]

Multiplication on abacus uses this rule of algebra "(a+b) * (c+d) = ac+ad+bc+bd".

We must choose a and c from the tens and b and d from the ones. For example: 34*12=(30+4)*(10+2)=30*10+30*2­+4*10+4*2=300+60+40+8=408.

Thank you very much for your good tutorial. I did not know anything about abacus and multiplications on it. And I am going to watch other videos about abacus to learn more!

[abacusma]

@rezacatt

Thank you very much. We will post more videos of AbacusMaster tutorial.

Regards,

AbacusMaster

[reviver96]

@abacusma I don't understand how you got 86 x 37 = 3182!

Please Explain

[rezacatt]

@abacusma Hi. I have not bought an abacus yet! When I buy it, I will try to watch more videos especially about division and squaring and cubing and I will try to ask you for help. I hope you will reply to me and help me learn much more!

Regards,

Reza

[amystefen]

I am not any expert but this is very well done and thanks for the tutorial it reallllyy helped :)

[shabeebcool]

WOW!!! this is amazing.. superb animations.. multiplication rocks..