Students must learn about the different segments in time that are used when talking about history. There are many segments, including Centuries, Decades, Eras, and Millenniums. This worksheet will focus on learning what a decade is, how to figure out what decade is being referenced, and knowing what years are encompassed in each specific decade. Students will them be given a list of different dates and must identify which decade the date occurred in. This is in a editable Microsoft word, so text can be edited, problems can be added or removed as needed, and scaffolding can be introduced as seen fit for your individual students.