dullard
Elite Member
- May 21, 2001
- 26,185
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The idea that you should round 5's up is a very incorrect rounding practice. It is sad that so many people think it is correct to always round up when there is a 5.However when we try to go to try and get rid of the nickel, the rule of 5 and up gets rounded up, means that there is more times that it gets rounded up (1,2,3,4 vs, 5,6,7,8,9).
The mathematically correct rounding system is this:
A) Round down for 1, 2, 3, or 4.
B) Round up for 6, 7, 8, or 9.
A) Round to the nearest even number for a 5.
For example, 12.5 is rounded to 12 while 13.5 is rounded to 14.
Follow that proper rounding technique and it still evens out in the long run. But, even if it didn't even out, would you really miss those few pennies?
