Sottrazione di Decimali (Vecchio)

Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2xp/ Esercizi: http://www.khanacademy.org/exercises?exid=subtracting_decimals Traduzione in Italiano del video Subtracting decimals (old) http://www.youtube.com/watch?v=0mOH-qNGM7M&feature=player_embedded http://www.khanacademy.org/video/subtracting-decimals--old?playlist=Arithmetic