A trip to the circus can be loads of fun. And there's a lot to learn under this big top, like the rules of subtraction. Subtraction is taking away something and finding the difference. For instance, a clown is carrying three pies out of the kitchen, fresh and hot. Uh-oh — watch out for that banana peel! Two of those pies go flying. Now there is only one left. That's subtraction! Throughout this book, jesters ride the roller coaster, hand out balloons, and wear funny hats. These entertainers are having great fun, but they are also introducing readers to important math notations and concepts such as the minus sign, the equals sign, and the number zero. The colorful illustrations keep children interested, while the clowns' goofy antics help basic subtraction facts sink in. There's plenty of clowning around in this entertaining math book, but when it's time for some serious subtracting these jokesters sure do know their numbers!