Hi Yolanda, sorry you have a crack in your concrete floor. Hope this is helpful How to Repair Wide Concrete Cracks
How to Repair Wide Cracks in Concrete
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You should first determine the cause of the cracking or your repair won’t last.
Home Depot sells 14 kinds of concrete in a caulk tube products and after you’ve determined what caused it, stop that process and clean it up-
use the product that works for you (read the labels).
Quikcrete concrete in a bottle at lowes and home depot