Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2uj/ Esercizi: http://www.khanacademy.org/exercise/rounding_whole_numbers Traduzione in Italiano del video Rounding Whole Numbers 3 http://www.youtube.com/watch?feature=player_embedded&v=3jBfLaLrk6I http://www.khanacademy.org/math/arithmetic/multiplication-division/v/rounding-whole-numbers-3