Math Help - Arithmetic Fun - Vertical Addition - Game Tips: - In this game, you add four 2-digit numbers. The maximum sum is 400. - It may take a minute to load the game at dial-up speeds. - If the game doesn't respond to keyboard input,     click inside the game area to establish the game's focus. - Press the - key repeatedly to slow the game down. - The game can be played using the mouse by itself or using the keyboard by itself. - The game speeds up as your score increases. Adjust this with the - and + keys.

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