Subtraction!

1. Can You Dig It?:  Solve the subtraction problems to find bones, and then you'll get to construct your own dinosaur!
2. Sketch's World:  Help Sketch make his way through the neighborhood - but watch out for the evil erasers!
3. Penguin Party Subtraction:  Feed the penguins by answering the questions - challenge yourself to go to higher levels!
4. Froggy Subtraction:  Feed the frog with subtraction facts.
5. Farmer Fred's Pumpkin Patch: Answer the questions to grow a garden full of pumpkins!