I hadn't seen Math Racer 3.0 until it went on sale, but I'm glad I found it! It's a great app for math facts fluency for addition, subtraction, multiplication and division. The app can be used for single facts, for addition/subtraction together and multiplication/division together, or all facts mixed. In school, students with 1:1 devices can compete against themselves, while classroom iPad sets can provide an opportunity for students to compete against each other. It's great for home practice, too!
Get it now while it's still FREE! No in-app purchases, either, just completely free for a limited time!