Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2uT/ Esercizi: http://www.khanacademy.org/exercise/multiplying_fractions_0.5 Traduzione in Italiano del video Multiplying Fractions http://www.youtube.com/watch?feature=player_embedded&v=CTKMK1ZGLuk http://www.khanacademy.org/math/arithmetic/fractions/v/multiplying-fractions