Flat of 10. To keep face cards and aces from confusing the math concepts in our games, Box Cars and One-Eyed Jacks makes specially printed mini-decks. Instead of jacks, queens, kings and aces, these decks have elevens, twelves, ones and zeroes. Our mini decks are smaller than regular playing cards, too, to fit better in the smaller hands that are meant to use them!
For teacher use, we also carry large demonstration-sized decks of cards with the same special 0 – 12 faces.