Sir Cumference and all the king's tens : a math adventure /
Cindy Neuschwander ; illustrated by Wayne Geehan.
- Watertown, MA : Charlesbridge, 2009.
- 32 p. : col. ill. ; 25 cm.
When Sir Cumference and his wife, Lady Di of Ameter, host a massive surprise birthday party for the king, they must figure out quick a way to count all the guests that are in attendance.