Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2x2/ Esercizi: http://www.khanacademy.org/exercises?exid=multiplying_fractions Traduzione in Italiano del video Multiplying fractions (old) http://www.youtube.com/watch?v=Mnu16kCRW4U http://www.khanacademy.org/video/multiplying-fractions--old?playlist=Pre-algebra