Eighty is a number that comes after seventy-nine and before eighty-one. It is represented as 80 in numerical form and is an even number. In Roman numerals, eighty is written as LXXX. This number is often used in various contexts, such as counting, measuring, and in mathematics. In terms of its significance, eighty is commonly associated with age milestones, such as celebrating an 80th birthday. It is also used in various cultural references, including the Eighty Years' War, which was a conflict in the Netherlands. Additionally, eighty can represent a percentage, such as 80%, indicating a significant portion of a whole.