There are plenty of ways to use this item. It's most idea for math centers or even math games that you want to teach to reinforce the use of fingers!
You can just make it like a regular puzzles where students can match the number to the fingers. You can also play a memory game with this by using the regular cards where students have to flip over and match.
In this download, I included black and white as well as colored copies. The black and white copies are perfect for making copies for students to practice at home or even in school. Up to you how you want to use them! :)