Math Is Fun Forum

theservant

Member

Registered: 2009-09-02

Posts: 1

How to multiply very large numbers?

Hi everyone, I just joined this forum.  I would like to know an easy way to multiply very large numbers. For example:  365,365,365,365,365  X  365,365,365,365,365  .  Many thanks.     theservant

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: How to multiply very large numbers?

Hi theservant;

If you mean in your head then:

Start with numbers like 48 * 52 to learn. Eventually you can move up to 3 by 2 or even 3 by 3 multiplication, such as 143 *117. The methods of ayurvedic math can assist and even increase your abilities. This little video is interesting if you can get past the awful trailer.
http://www.metacafe.com/watch/292879/99 … your_head/

There are many pages on the web to help you. Unless you are autistic, I would say use a computer for 365,365,365,365,365  X  365,365,365,365,365.

Last edited by bobbym (2009-09-02 20:32:00)

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

mathsblog

Member

Registered: 2009-09-06

Posts: 1

Re: How to multiply very large numbers?

Hey Bobbym
its not ayurvedic maths.. its Vadic maths.
Ayurveda is related to medicine and health

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: How to multiply very large numbers?

Hi mathsblog;

Yea, I keep making that mistake, sorry.

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.