This is a game that students can play in a whole group setting or in partners (or even small groups). This game is a great way to get students excited about adding two digit numbers, thinking strategically, and collaborating.
There are two ways to play--with dice or cards. If you are using cards, you only need number 0-9 or 1-9 (single digits). I have often used a deck of playing cards and taped over the ace to make a 1.
With cards: Student play in pairs. Pairs draw 6 cards from the deck and make three two-digit numbers. They add the numbers and the person closest to 100 without going over is the winner.
With dice: Students roll the dice 6 times and record the numbers they rolled. They then create three two-digit numbers. The person closest to 100 without going over is the winner.
Included are directions (both for cards and dice) and recording sheets. You can use the half sheets or give each person a laminated sheet that he/she can erase after each round.