Count the items on each card, then clip on mini-clothes pins to the correct number. (I found these cute colorful Clothes pins at Office Depot, they’re also magnetic.) You can also use colorful paper clips, or put it on a cookie sheet and use magnets. You could laminate and use dry-erase to circle the numbers as well!
These activities are part of my K4 level expansion to my Letter of the Week Curriculum, click on the images below to see more activities. The K4 curriculum isn’t quite finished yet, so until I get it packaged all nice and purdy you can download from my posts!