Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2ua/ Esercizi: http://www.khanacademy.org/exercise/place_value Traduzione in Italiano del video Place Value 1 http://www.youtube.com/watch?feature=player_embedded&v=jxA8MffVmPs http://www.khanacademy.org/math/arithmetic/multiplication-division/v/place-value-1 Help us caption & translate this video! http://amara.org/v/B2ua/