Addition with Regrouping http://www.oswego.org/ocsd-web/games/Ghostblasters3/ghostadd3.html
Addition Matho http://www.aplusmath.com/games/matho/AddMatho.html
Two Digit Addition http://www.ixl.com/math/practice/grade-2-add-two-two-digit-numbers
Math Flash Cards http://www.aplusmath.com/Flashcards/index.html
Double Digit Addition http://www.learn4good.com/games/kids/double_digits.htm
Four Digit Addition http://www.numbernut.com/basic/activities/00magnify.html?newurl=add_quiz_4carry.swf
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