I can never have enough math centers for my students. They love the variety there is to choose from in the classroom and this is one of the popular activities to complete.
Hundreds Chart Puzzles are super easy to make and using the same template you can create MANY different puzzles. All you need to do is print the chart on colored paper, laminate (optional), and cut out in a variety of ways.
I store each puzzle in their own bag with a color matching labels so it is easy to put pieces back if they fall out.