Three-eighths is a fraction represented as 3/8. It indicates that something is divided into eight equal parts, and three of those parts are being considered. This fraction can be used in various contexts, such as cooking, measurements, and dividing objects. In decimal form, three-eighths is equivalent to 0.375. It is also a common fraction in mathematics and can be simplified or converted into percentages, where it equals 37.5%. Understanding fractions like three-eighths is essential for basic arithmetic and practical applications in everyday life.