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April 17th, 2012, 11:20 AM  #1 
Joined: Apr 2012 Posts: 17 Thanks: 0  What does decimal form mean?
Can anyone explain to me what this means and it would really help if you could show an example of a integer using the decimal form stated below: Suppose that the integer n is given in decimal form, where for all i. I guess I just don't understand the notation and seeing an example will really help. 
April 17th, 2012, 11:22 AM  #2  
Joined: Apr 2012 Posts: 17 Thanks: 0  Re: What does decimal form mean? Quote:
 
April 17th, 2012, 11:47 AM  #3 
Global Moderator Joined: Nov 2006 From: UTC 5 Posts: 15,646 Thanks: 809 Math Focus: Number theory, computational mathematics, combinatorics, FOM, symbolic logic, TCS, algorithms  Re: What does decimal form mean?
When you write "316", the "3" means 300, the "1" means 10, and the "6" means 6. This can be written 316 = 3*10^2 + 1*10^1 + 6*10^0.

April 17th, 2012, 02:38 PM  #4 
Joined: Apr 2012 Posts: 17 Thanks: 0  Re: What does decimal form mean?
That's what I thought it was talking about numbers in base 10 but do you have any idea why it is called decimal form? I thought decimals in base 10 would be : 
April 17th, 2012, 03:12 PM  #5 
Global Moderator Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,131 Thanks: 428 Math Focus: Calculus/ODEs  Re: What does decimal form mean?
Decimal just refers to base 10 notation.

April 19th, 2012, 03:07 AM  #6 
Joined: Mar 2012 Posts: 21 Thanks: 0  Re: What does decimal form mean?
Decimal notation refers to the base 10 notations.For eg: 156=1*100+5*10+6=1*10^2+5*10^1+6*10^0 As you see the all numbers are multiplying to the 10 which have some power.This is decimal notation. 

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