A spreadsheet is a set of one or more data tables that can do automatic calculations.

There are three commonly used free spreadsheet programs. This tutorial is for Google Sheets, but all three programs are very similar.

Microsoft Excelused in businesses and organizations worldwide; very powerful
Google Sheetseasy to access online and share files; part of Google Drive
Apple Numbershas Apple simplicity and elegance
    ➜ Try it
  1. Open the Haunted House Expenses 2018 spreadsheet.
  2. Choose File ⇒ Make a copy, and save it to your Google Drive.