Montessori Math: Add & Subtract Large Numbers!

Designed by teachers and Award winning app developers, Montessori Math: Add & Subtract Large Numbers presents an in-depth, step-by-step approach to these two essential operations. It also presents fundamental Montessori materials: the stamp game and the bead frame. When using our app, your child will never come across:- advertising- in-apps- links to social networks- personal data request