Change for a hundred (4)
I believe the answer is:
tens
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">change for a hundred</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for tens that I've seen before include "Half-scores" , "Cardinal numbers" , "At least 20" , "X, X, X, ..." .)