Teacher2Teacher

Q&A #310

Teachers' Lounge Discussion: Teaching percents

_____________________________________
T2T || FAQ || Ask T2T || Teachers' Lounge || Browse || Search || Thanks || About T2T
_____________________________________

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

From: ray <rmerewe1@san.rr.com>
To: Teacher2Teacher Public Discussion
Date: 1998121713:25:32
Subject: percents

Claudia quoted the problem correctly:"What percent of 11 is 55?", but
set up the problem wrong and is headed for 20% as an answer.  The
answer is 500% (see the first explanation by Jamie).

Which brings up the idea of giving the student a few (say 5) mileposts
to memorize:
25% is 1/4
50% is 1/2
100% is all of it
200% is twice as much
1000% is 10 times as much.

The student should then be encouraged to always check a calculation
against one of the memorized mileposts for reasonableness.

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 ®
© 1994-2014 Drexel University. All rights reserved.
http://mathforum.org/
The Math Forum is a research and educational enterprise of the Drexel School of Education.The Math Forum is a research and educational enterprise of the Drexel University School of Education.