One-third is a fraction that represents one part of a whole that is divided into three equal parts. In mathematical terms, it is written as \frac13 . This means if you have something divided into three equal sections, one-third is just one of those sections. In everyday life, one-third can be seen in various situations, such as when sharing a pizza among three friends. Each friend would receive one-third of the pizza, ensuring everyone gets an equal share. Understanding one-third helps in making fair divisions in many scenarios, from cooking to budgeting.