"Four Tenths" refers to a fraction represented as 4/10. This fraction can be simplified to 2/5, meaning that if something is divided into five equal parts, four of those parts are being considered. In decimal form, four tenths is equal to 0.4. In practical terms, "Four Tenths" can be used in various contexts, such as measuring distances, calculating percentages, or determining proportions. For example, if a class has 40 students and 16 of them are girls, the fraction of girls in the class can be expressed as four tenths, or 0.4, indicating that 40% of the class is female.