Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2xu/ Esercizi: http://www.khanacademy.org/exercises?exid=multiplication_2 Traduzione in Italiano del video Multiplication 5: 2-digit times a 2-digit number http://www.youtube.com/watch?v=t8m0NalQtEk http://www.khanacademy.org/video/multiplication-5---2-digit-times-a-2-digit-number?playlist=Arithmetic