Date: Jan 7, 2013 12:35 AM
Author: David Park
Subject: Re: Precision
To permanently change your number display use Menu -> Edit -> Preferences,

then the Appearance, Numbers tab and set the display you wish.

For custom formatting within a notebook use NumberForm and its options.

Note that the purpose of N is to convert an exact number to an approximate

number and it is not intended for number formatting.

David Park

djmpark@comcast.net

http://home.comcast.net/~djmpark/index.html

From: Rob Ryan [mailto:tio540s1@gmail.com]

My frustration is growing. I simply want to add (for example):

103971.66+52282.64+2998.27. These are dollars and cents and I'd like to keep

the cents. But when I input that line, I get 159923. When I input:

N[(103971.66+52282.64+2998.27),20] I STILL get 159923. What do I do to get

159952.57? I've used "SetPrecision", etc. with still no result.

I note that when I type 103971.66 and hit shift-return, the output is

103972. If I then type "InputForm[%]" I get 103971.66.

There simply has to be an easy way to add these numbers - any calculator

watch can do it!