This application was made as an effort to learn to calculate addition and subtraction which can be learned by beginners. We, as the developers of this application, develop learning in the form of an Android application so that all users can access it, and can learn and use it.
The material presented in this application is the introduction of addition and subtraction with a unit/one digit limit.
Hopefully this application can provide knowledge and increase understanding of calculating the addition and subtraction presented in this application.