Choose from easy, normal, hard difficulties and try to solve the formulas as fast as possible! Your score depends on your speed! All you need to do is to assign plus or minus to the empty fields by tapping on them! Submit your score to see who is the best mathematician!
Plus or minus? is an original educational high scoring game that will improve your Math skills in an entertaining way!
NOTE: use FIREFOX BROWSER or enable FLASH in your browser to play FLASH games. HTML5 games can be played in any browser. Download latest flash from adobe( http://www.adobe.com/go/getflashplayer )