Maths Boom Cards 1-50 small cards before and after

These are new cards I am using in maths stations to work on their before and after. Cut and laminate the cards and turn them upside down. I put address labels on the back as it can be see-through. Get each person to take a turn in turning over a card and then answering what comes after or before. If they get a red boom card they lose their cards. If they get a blue boom card with the blue border they get another go. The winner has the most cards at the end. The cards are 1-50.