The numbers that get decimated (4)

I believe the answer is:
tens
'the numbers that get decimated' is the definition.
'tens' can be an answer for 'the numbers' (ten is a kind of number). I'm unsure of the remainder of the definition.
'the numbers' is the wordplay.
'the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'numbers' becomes 'ens' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
't'+'ens'='TENS'
Can you help me to learn more?
(Other definitions for tens that I've seen before include "Half-scores" , "Cardinal numbers" , "At least 20" , "X, X, X, ..." .)
