You can start  in the following ways:Menu
Choose AccessoriesCalculator.
Command line
Execute the following command: gnome-calculatorWhen you start , the following window is displayed: Basic Mode WindowShows  Basic mode window.  The  window contains the following elements: MenubarThe menus on the menubar contain all of the commands that you need to work with .Display areaThe display area shows the numbers that you enter, and the results of calculations. If you are not using arithmetic precedence, you can only enter numbers of up to forty digits.  Mode areaThe mode area displays the buttons for the current mode. The Basic mode buttons are always displayed. Advanced mode buttons are also available in Financial and Scientific modes.  Popup MenuThe Shows popup-menu symbol. symbol on a  button indicates that a popup menu is displayed when you click on that button.Status BarThe status bar displays messages on the status of your calculations.
