Tens or Teens: How To spell?
The word Tens is misspelled against Teens, a noun meaning "The years of one's age having the termination -teen, beginning with thirteen and ending with nineteen; as, a girl in her teens."
Teens has double "ee" is mispronounced as "e"Remember double 'EE' in between the strings T & ns which should not be misspelled with single 'E'
Wrong Spelling:  T-e-ns  Correct Spelling:  T-ee-ns 
Explore spell check of Teens to spell without errors.