By the way, do not use an apostrophe to make the decade/century plural.
The 1980s, the 1990s, etc.
There is no clear-cut way to do this. If you say "The sixteen hundreds" it sounds like the entire century. The first decade of the 1600s is clear. I've heard "aughts" but not by anyone in casual conversation. We have the same problems with this decade too. 2010, 2011, 2012 - they were not the "teens."
Student or Learner