I have... Who has?

We play this fun fluency math game in our class called I have... Who has?  Each student gets a card and looks at the number on the card.  One card reads, "I have the first card.  Who has...?"  Each child needs to think about the question and decide if their card holds the answer.  If it does they read their card out loud.  We have many sets of cards that allow us to practice ten more than/ten less than/ one hundred more than/one hundred less than/ etc.  To make it really challenging, sometimes we time ourselves and see if we can go faster and beat our time!