Add and subtract within 20 Взлом 4.0.2

Introducing the new generation of math learning apps powered by handwritten digit recognition. Handwritten input is the most natural for children, no more multiple choice questions or distraction through keyboard input. With our apps kids can better focus on tasks and get a chance to improve their handwriting.

This app was designed to help children to practice and improve their skills in adding and subtracting numbers up to 20.