3rd Grade Math: Fun Kids Games is a sample of a larger, more comprehensive practice system that uses math games to help children master critical concepts. The games are fast-paced, colorful and exciting, and will engage the target age group using immediate feedback, earned rewards, and several other strategies.
ArithmeQuick is a functional system of timed math practice that keeps at-a-glance performance records for students. The free version allows practice with basic computation and signed computation. A subscription allows access to a huge array of skills and subtopics suitable for kindergarten through grade 8.