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12012010  #11 
Join Date: Oct 2010
Posts: 7

Math Book
Just go to tutorvista they will help you. But if they don't all you need to know is to take the decimal point two times to the right then put the number you get over 100 then divide the numerator into the dem.... tell u later

12032010  #12 
Join Date: Nov 2010
Posts: 36


12042010  #13 
Join Date: Mar 2005
Posts: 10,648

Thanks for typing it out, Lisa.
The fact that 0.999... is so close to 1, and the difference between 0.999... and 1 is infinitesimally small, "proves" that 0.999... = 1.
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12062010  #14 
Join Date: Oct 2010
Posts: 8

yup

12202010  #15 
Join Date: Nov 2010
Posts: 36

Mr Hui,
I think this one becomes 1 as the following illustrates: let x = 0.999 and 10x = 9.999 10x  x = 9 9x = 9 x = 1 0.999 is approx = 1 (I guess there has to be some rounding at due to the nature of decimals, whereas fractions can be more exact. 
12242010  #16  
Join Date: Dec 2008
Posts: 249

Quote:
10  x = 9.999999...  0.99999999... 9x = 9 x = 1 Substituting back gives 1 = 0.99999... 

12242010  #17 
Join Date: Nov 2010
Posts: 36

Thank you Mr Hui, Mas1 and Tiger190 for you patience and support. I actually posted more replies than I wanted. When I originally replied I didn't see my reply so I posted another and another for same reason. Sorry for the mistake and driving you all mad! However, I am really grateful to you all because believe it or not I could never round decimals (except simple ones!) until I came across Mas1's post which really helped me. Thanks again to you all!
Lisa Smith 
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