Eighty is the number that comes after seventy-nine and before eighty-one. It's written as 80 in numerals and represents eight groups of ten. If you counted by tens (10, 20, 30, 40...), eighty would be your eighth stop.

In everyday life, eighty shows up in many places. A classroom might have eighty pencils in the supply closet. A recipe could call for eighty grams of flour. Many highways have speed limits of eighty kilometers per hour in countries that use the metric system.

The number also has cultural significance. In many places, reaching eighty years old is considered a major milestone worth celebrating, since it represents a long, full life. Some card games use eighty points as a winning threshold. The 1980s, often called the eighties, refers to the decade from 1980 to 1989.

When counting large quantities, eighty sits in that range where you might still count individual items rather than estimating. You could count eighty jelly beans in a jar, though it would take some patience.