Q&A #823

Expanded form

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

View entire discussion

From: Gail (for Teacher2Teacher Service)
Date: Nov 20, 1998 at 21:00:32
Subject: Re: Expanded form

I have a set of cards (actually long strips) that show the place values for 
all the digits. For example, there is a red set that just has the digits 0 
through 9. Then there is a green set that has 10 through 90, and a purple 
set of 100 through 900, and a blue set of 1000 through 9000, etc.  When I 
want to build a number using them, I can stack them to show only the first 
digit, so 2000 + 300 + 50 + 8 looks like 2358, but when I separate all the 
cards, I can see what the place values really are.

 -Gail, for the Teacher2Teacher service

Post a 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.