http://www.flashcardexchange.com/tag/tays www.flashcardexchange.com: tays Flashcards en-us Tue, 24 Nov 2009 07:13:27 PST Tue, 24 Nov 2009 07:13:27 PST support@flashcardexchange.com 720 http://www.flashcardexchange.com/flashcards/view/429024 Addition Facts 1 - 20 No duplicates such as "2+5" and "5+2" (I have a subtraction flashcard set also) Wed, 24 Jan 2007 12:00:00 PST http://www.flashcardexchange.com/flashcards/view/429024