Make Ten is a great little game for sums of ten! All you need is a deck of cards, and it's even self-correcting, since using all of the number cards in the deck will evenly use them all as pairs totaling ten. From MyMommyReads
People BINGO: Math Style – A Great Back To School Math Activity
Free People BINGO: A Great Back to School Activity - (Grades 2-5)- A silly little game in which students get to move around and get out those first day jitters by meeting each other and learning more about their classmates, while doing simple math calculations.