Astrio Examples is a mental arithmetic training program for Windows. In the Setup section, the user selects the difficulty level and checks the desired mathematical operations�addition, subtraction, multiplication, and division�then click Start Training to begin training. In the Training section, examples (Questions) from a given set of 10 questions are displayed sequentially. The user enters the answer in the field and confirms it with the Submit button. Upon completion of the training, the Last Results section displays the results�the number of correct answers, the time spent, and the final grade (Grade).