Verbose links for you: Khan Academy: http://www.khanacademy.org/ http://www.khanacademy.org/ Arithmetic videos: http://www.khanacademy.org/#arithmetic http://

Verbose links for you: Khan Academy: http://www.khanacademy.org/ http://www.khanacademy.org/ Arithmetic videos: http://www.khanacademy.org/#arithmetic http://www.khanacademy.org/#arithmetic Easiest addition video: http://www.khanacademy.org/math/arithmetic/addition-subtraction/v/basic-addition http://www.khanacademy.org/math/arithmetic/addition-subtract... Exercises: http://www.khanacademy.org/exercisedashboard http://www.khanacademy.org/exercisedashboard Addition exercises: http://www.khanacademy.org/math/arithmetic/addition-subtraction/e/addition_1 http://www.khanacademy.org/math/arithmetic/addition-subtract...