The fraction "4/5" represents a part of a whole, where the number 4 is the numerator and the number 5 is the denominator. This means that if something is divided into 5 equal parts, 4 of those parts are being considered. In decimal form, 4/5 is equal to 0.8, which indicates that it is a little less than a whole. In practical terms, "4/5" can be used in various contexts, such as measuring ingredients in cooking or determining portions in a recipe. For example, if a recipe calls for 5 cups of flour, using 4/5 of that amount would mean using 4 cups. This fraction is commonly encountered in everyday situations.