Q&A #1154

Teachers' Lounge Discussion: Front End Estimation

T2T || FAQ || Teachers' Lounge || Browse || Search || T2T Associates || About T2T

View entire discussion
[<< prev] [ next >>]

From: Kelly Wheeler

To: Teacher2Teacher Public Discussion
Date: 2003073023:31:14
Subject: Re: Front-End estimation is usless

Go back through and check out my other posts. Front End Estimation means simply that you don't compensate (round) based upon lower significant digits. This makes it easier to add in one's head. Estimation is usually used by humans. Computers can simply get ultimate precision. It's useless to increase precision beyond your potential. If you have paper and pencil and want precision of the first eight digits of a ten digit number, then why not add the others too (unless it's homework :( )! NOTE: In real life, all measurements are FEE! If you measure with a ruler, the item could be (ridiculously precisely) larger or smaller. A ruler does not round! Nor does a gps that uses an atomic clock (actually they decrease resolution for public use so we can't send missles to each other)! They all FEE. The reason is that anything smaller than our unit of measure can't be measured. Therefore, it is ignored (truncated). Kelly

Post a reply to this message
Post a related public discussion message
Ask Teacher2Teacher a new question

[Privacy Policy] [Terms of Use]

Math Forum Home || The Math Library || Quick Reference || Math Forum Search

Teacher2Teacher - T2T ®
© 1994- The Math Forum at NCTM. All rights reserved.