The math puzzle Sum Rush will test your mental arithmetic skills under tight time constraints. A grid with numbers will appear in front of you, from which you need to quickly make up a given amount. You only have ten seconds to solve each mathematical example. Just click on the desired numbers to select, and if you make a mistake, click on them again to cancel the action. Use a special multiplier tile that instantly doubles the entire amount received. Act quickly, solve equations and earn game points in Sum Rush.
