My students absoltuely LOVE playing Place Value Battleship! It is great as a whole group, or a center activity.
The students are required to roll multiple dice until each of their place value spots has a number in it. The students then take turns trying to figure out their opponents numbers.
For example - "Is there a one in your thousandths place?"
The students are also given an area to record any correct (or incorrect) guesses on their board. These boards work wonderfully if they are laminated, or put in a transparent sheet!