Sottrazione 3 - Introduzione a Prestito o Cambio

Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2xk/ Esercizi: http://www.khanacademy.org/exercises?exid=subtraction_3 Traduzione in Italiano del video Subtraction 3: Introduction to Borrowing or Regrouping http://www.youtube.com/watch?v=ZaqOUE3H1mE http://www.khanacademy.org/video/subtraction-3---introduction-to-borrowing-or-regrouping?playlist=Arithmetic Help us caption & translate this video! http://amara.org/v/B2xk/