Provides opportunities for youngsters who know how to add the numbers one and two to numbers through twenty-nine to practice adding three through nine to numbers in this span. Title: Mi Libro de Sumas / Addition Author: Sarris, Eno (EDT) Publisher: Kumon Pub North America Ltd Publication Date: 2009/03/01 Number of Pages: 80 Binding Type: PAPERBACK Library of Congress: bl2009008359