Addition Quia- Math Journey Students try to travel around the world by answering math problems correctly. http://www.quia.com/mathjourney.html Practice Addition:  http://www.aaamath.com/B/grade5.htm#topic17 Practice three, four, five, six, and seven digit addition Number Monster! http://www.coolmath-games.com/numbermonster/ Choose easy, easy2, medium, hard, harder, killer, monster levels. Math Baseball http://www.funbrain.com/math/ Choose Addition and Hard Tic Tac Toe Squares http://math.funbrain.com/tictactoe/index.html Choose Addition and Hard Power Football http://www.funbrain.com/football/index.html Choose Addition and Hard Basket Math Interactive: http://www.scienceacademy.com/BI/index.html Practice addition, subtraction, multiplication, division, rounding, order of operations, GCF, perimeter, distance, word problems, map scale, decimal subtraction and division, bar graphs, and verbal reasoning.