Welcome to the new online game SUM with which you can test your knowledge in mathematics. Before you on the screen will be seen the playing field at the upper part of which will be the panel. Inside the panel you will see numbers. Under the panel you will see tiles with numbers applied to their surface. You will have to find two digits, which in total can give one of the numbers on the panel and highlight them with a click of the mouse. Thus, you will remove these objects from the game field and get glasses in the game SUM for this. The level will be passed when you clean the entire panel of numbers.
