ForumsThe TavernCool way to multiply numbers

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Haku1234567890
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Haku1234567890
1,720 posts
Nomad

Hello, Im going to show you cool way to multiply 2 numbers

first chose 2 numbers

for example 212 x 311

Draw an vertical line for every digit in first number and draw horizontal line for every digit in second number
Like this:

http://i46.tinypic.com/1rsxug.png

Now...you need to count intersections to get result
to make it easyer for you I will mark which intersections you need to count to get which number

to get 1st number count all intersections in red square
to get 2nd number count all intersections in green squares
to get 3rd number count all intersections in blue squares
to get 4th number count all intersections in pink squares
to get 5th number count all intersections in orange square

http://i45.tinypic.com/2q3vwvl.png

If you counted it correct, you shoud get 65932 and that is result

ok, now lets see how to do it when total intersections for one number are bigger than 9
for example

324 x 426

http://i46.tinypic.com/5xsvm0.png

when numbers are bigger than 9, you need to add 1st digit from that number to 2nd digit to number left from it

ok, now what if number has 0 in it like

210 x 303

http://i46.tinypic.com/5xsvm0.jpg

zero-s are marked with dashed line, you do it same as previous ones but when you are counting intersections, you are counting norman and pretending that dashed lines dont exist

Ok, now when you know all that you can show off to your friends lol
ohh...and I forgot to mention you can do it any 2 numbers, you just need to know which intersections are for what number

here is example of 2 digit x 2 digit and 3 digit x 2 digit

http://i46.tinypic.com/24g6iw9.png

Thats all, I hope I explained it good enought...have a nice day

Comment to keep it alive

  • 4 Replies
Haku1234567890
offline
Haku1234567890
1,720 posts
Nomad

delete this topic please, I got an error in my first topic I made topic again and same error happened

Spirytysta
offline
Spirytysta
94 posts
Scribe

It is great way

2014631
offline
2014631
1,855 posts
Nomad

Uhm... this is a great way, but doesn't it take a lot longer than just
15
X15
____
75

2014631
offline
2014631
1,855 posts
Nomad

Uhm... this is a great way, but doesn't it take a lot longer than just
15
X15
____
75


Sorry I didn't finish the equasion, I tried to add another line, and I clicked tab, and it didn't work, but instead it highlighted the submit button. I pressed enter to add a new line, and shapow! It posted lol.
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