* FULL FILE* (Note: a one page freebie sample of this product is available) My kids absolutely LOVE practicing their basic subtraction facts using this product! Once these are printed I highly recommend laminating for durability. Once laminated cut out the boxes and hole punch the penguin bellies. I use a smaller hole punch and colorful pipe cleaners for the students to 'poke' the penguins. However, a larger hole punch and a pencil work as well. Once hole punched turn the card over and circle the correct answer. My students love this and letting the students self-check their answer (by turning over) allows for independence. These work fantastic as a center. I allow students to use these in a small group, or individually. Hope you enjoy!