Netvouz / richard5 / tag / subtraction http://www.netvouz.com/richard5/tag/subtraction?feed=rss richard5's bookmarks tagged "subtraction" on Netvouz 124 E-Lab, Subtraction of Mixed Numbers http://www.harcourtschool.com/activity/elab2004/gr6/5.html Math > 117-137 richard5 Sat, 15 Dec 2007 13:46:50 GMT 42 Model and Record 2-Digit Subtraction http://www.harcourtschool.com/activity/show_me/e234.htm Math > 8-49 richard5 Sat, 15 Dec 2007 13:14:13 GMT