Knigi.xlsx -

: Using basic mathematical operations to find totals, averages, or apply discounts. Technical Characteristics

The file (Bulgarian for "books.xlsx") is a common sample dataset used in Bulgarian Information Technology (IT) education, particularly for 9th-grade students learning to manage and analyze data in spreadsheet software like Microsoft Excel. It serves as a practical tool for mastering essential digital literacy skills, such as sorting, filtering, and performing calculations. Educational Context

: It supports modern spreadsheet requirements, allowing for over one million rows and 16,000 columns. knigi.xlsx

: Learning to organize information alphabetically or numerically by multiple criteria.

The file is frequently found on educational platforms such as inftech.bgtest.eu and manchevska.weebly.com , where it is included in exercises related to textbooks from publishers like Domino. It typically contains a structured list of books with fields like title, author, price, and year of publication, providing a relatable context for students to practice: : Using basic mathematical operations to find totals,

As an file, it utilizes the Open XML standard introduced by Microsoft in 2007. This format offers several advantages over the older .xls binary format:

: It is essentially a zipped archive of XML files, making it much smaller and easier to share via email or educational portals. It typically contains a structured list of books

: Extracting specific subsets of data, such as all books by a particular author or those within a certain price range.