Click on the flashcard to
begin the game. Add or subtract to solve the problem
shown. Type in your answer, then press enter to see the
next problem. Race against the clock and try to solve as
many problems as you can in 2 minutes! The game will
automatically stop at the end of 2 minutes.
games require more memory and a newer browser. If game
does not load, try updating your browser to the latest
version. This game takes a few seconds to load.