In Summation 2, you place the shapes on the bottom of the screen onto the board to fill in the rows and columns. When a row or column has been filled, it will be cleared and you will be given a score equivalent to the sum of the numbers in that row or column. Either play offline and try to beat your own best score or compete in the daily challenge and see who can score the most points that day. https://play.google.com/store/apps/details?id=com.parallelrealities.summation2&hl=en
