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Enko



Joined: 03 Apr 2007
Posts: 678
Location: Mar del Plata
Enko
Just out of curriosity, how did you learn to do the division on paper?

I studied first in Ukrane, and then in Argentina, and there where some diference in the method of performing the division. In Ukraine I was teached to do the substraction on paper, but in argentina they teached to perform the substraction in mind.


Ukrane method (guess russian and all of ex soviet countries):

Code:
83268|4
-8    -------
 ---  |20817
  32
 -32
  ---
    6
   -4
    --
    28
   -28
    --
     0

    


in Argentina

Code:
 83268|4
      -------
 ---  20817
 032
  ---
    06
    --
    28
    --
     0
    


the diference, is that the substraction is not writed, just the rest of the substraction.


Where you teached to perform the substraction on paper, or in mind?
Post 16 May 2011, 23:09
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edfed



Joined: 20 Feb 2006
Posts: 4240
Location: 2018
edfed
seems that argentina have same method as france.

but later, i leanrt to do the division with a calculator. it is more easy.
Post 17 May 2011, 00:25
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Enko



Joined: 03 Apr 2007
Posts: 678
Location: Mar del Plata
Enko
edfed wrote:
seems that argentina have same method as france.

but later, i leanrt to do the division with a calculator. it is more easy.


My guess is that in US use the same method too. But it will be intersting to hear from someone Laughing
Post 17 May 2011, 00:37
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typedef



Joined: 25 Jul 2010
Posts: 2913
Location: 0x77760000
typedef
When I was in 4th grade it was:

45/5

or

45
------
5

In 5th grade it went to this (The one on the right)


Image
Post 17 May 2011, 01:10
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JohnFound



Joined: 16 Jun 2003
Posts: 3502
Location: Bulgaria
JohnFound
Enko wrote:
Just out of curriosity, how did you learn to do the division on paper?

Here in Bulgaria, I was trained to do it as you in Ukraine, but with slight difference in the appearance. When the division is in one line and generally in the arithmetic, the sign for division is ":".
In the algebra, the division is usually written in two lines, but sometimes (for space saving) in one line with "/" sign.
Code:
The arithmetic operation on paper:
83268:4 = 20817 
8   
--
03
 0
--
 32
 32
----
  06
  04
 ----
   28
   28
  ----
    0    
Post 17 May 2011, 08:28
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Picnic



Joined: 05 May 2007
Posts: 1288
Location: behind the arc
Picnic
I feel comfortable with the argentina method, but I do not know what is true today in Greek schools. Soon my daughter will go to school so i find out. Smile
Post 17 May 2011, 09:50
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Overflowz



Joined: 03 Sep 2010
Posts: 1046
Overflowz
Enko
We're using same here. Like in Ukraine. But I don't understand second method you wrote..
JohnFound
Yes, we're using ":" symbol for division too Smile


Last edited by Overflowz on 30 Oct 2011, 14:19; edited 1 time in total
Post 17 May 2011, 10:53
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Enko



Joined: 03 Apr 2007
Posts: 678
Location: Mar del Plata
Enko
Overflowz wrote:
Enko
We're using same here, in Georgia. Like in Ukraine. But I don't understand second method you wrote..
JohnFound
Yes, we're using ":" symbol for division too Smile


In The second method, you dont write the substraction on paper, just the result of the substraction.
What I mean, as you must to multiplie in your head, do the substraction in your head, write the result of the substraction on paper. And repeat the proces.


easier example:


Code:
438 |2
0   --   ; in head 2x2=4  4-4=0
 3  219
 18      ;in head 2x1=2   3-2=1 
  0        in head 2x9=18  18-18=0
    

when the multiplication is performed per digit, the substraction is performed to.
I can-t really explain how it should be done, becouse I never intended to learn it. only know how it looks like.
Post 17 May 2011, 13:07
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Overflowz



Joined: 03 Sep 2010
Posts: 1046
Overflowz
Ohh. I guess.. I think our method is more easy and safe than second one Very Happy
Post 17 May 2011, 21:15
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