This calculator allows teachers to save time while correcting exams as it enables them to sum all the obtained marks by a student without having to tap multiple buttons on a regular calculator. All you have to do is tapping the button corresponding to the point given to one of the exercises or part of it the calculator will add it automatically to the total mark.

Theoretically this calculator will enable you to earn four fifths of the time spent on adding up marks given that adding a mark that contains two numbers after the comma and one before it requires tapping four buttons in addition to the plus button while this calculator do it using one button.