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User Name: Pradeep 
Address: Baangalore, Karnataka, India 
Question: Pradeep wants to estimate the sum of 79, 26 and 57 to the nearest 10's. What is the estimated Sum? Answer: 160 (162 to the nearest 10 would be 160). But in the site shows that the right answer as 170. 
Responses 
Name:Webmaster 
Date:20060320 08:03:54 
Address:Dallas, TX, USA 
You are correct in a way. But, normally we round (to the nearest 10's or 100's) the individual numbers and then add them up  it is an estimate. Instead of that, if we do the hard work of adding all the numbers and then rounding the sum is not giving us a quick way of estimating. Comments are welcome. 

Name:Pradeep 
Date:20060321 00:39:31 
Address:Bangalore, Karnataka, India 
Hi, The reasoning seems to be logical. Am satisfied with the answer. Thanks & Regards, Pradeep. 

Name:Marcus 
Date:20060322 16:42:47 
Address:New Paris, Pennsylvania, Bedford 
I think you've got the wrong answer and if I was a teacher I would mark the answer wrong.And then you would get a lower grade. 



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