A spreadsheet displays data in a table called a worksheet and is used to prepare budgets, financial statements, inventory management, and charts. A worksheet is a grid with columns and rows, where each intersection is called a cell that can contain labels, values, or formulas. Formulas use functions, cell references, and operation symbols like addition and multiplication to perform calculations. Common spreadsheet tools include adjusting column width and row height, filling data across cells, using the auto sum function, and creating charts to visualize data.