1st Grade Subtraction is designed for children 3-6 to get your child ready for school. Pick from numbers 0 - 9 and find the sum. Have fun learning math subtraction problems while listening to calming music and interesting animal photos used for backgrounds. When the child is ready, pick the "Test your Brain" button to try all the problems randomized. 1st Grade Subtraction is ready to help your child learn basic math problems while they are in Kindergarten and before 1st grade. Very simple and easy to use plus, no In-App-Purchases.