"Sir Cumference and All the King's Tens" is a Math Adventure book for elementary age children that uses the king's surprise birthday celebration for a chance tl learn to count by tens. Surprise party guest attendance must be counted quickly because Lady Di and Sir Cumference, the host and hostess for the birthday party, need to know how many guests to feed for lunch and dinner. In a comical series of preparation adventures, Sir Cumference and Lady Di count guests by tens, hundreds, and even thousands, using a system known as "place value" for their numbers. How many guests attend in total, and does the gloomy king finally smile and enjoy his birthday party? Inquisitive budding math minds will want to know, so pages will painlessly turn and numbers will effortlessly be learned in "Sir Cumference and All the King's Men," a math masterpiece!