Theory:

worksheet is an area where you do all the tasks. You can enter and edit data in a worksheet. A combination of one or more worksheets forms a workbook.
 
To save the worksheet created,
  • Click the LibreOffice Calc Spreadsheets from the LibreOffice Start Centre.
start screen.jpg
  • By default, you always get a workbook (sheet\(1\)) when you open the LibreOffice Calc application.
1.jpg
  • Enter the content in the LibreOffice Calc Spreadsheet.
1.jpg
  • Go to the File menu and select the Save or Save As option.
2.jpg
  • Type a filename and click on Save. For example, to save the students’ marks, type the name Marks in the Filename box and click on the Save button.
3.jpg
  • You can also click on the Save icon on the Standard toolbar.
4.jpg