A gradual and thorough approach to addition and subtraction.

For children aged 6 to 9 years old.

A Montessori* based app.

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.

More importantly, this app makes the concepts of “exchanging” (carrying/borrowing) so obvious that even adults will be surprised.

Montessori Math: Add & Subtract Large Numbers features : 

- Our exclusive Dynamic Progression Algorithm to follow each child’s progress individually. 

- 4 pre-determined levels. 

- Color-coded place values to allow children to easily identify thousands, hundreds, tens and units. 

- 3 activities to learn: the stamp game, the bead frame and the magic slate. 

- 3 games to practice: Missing Digits, Wiz Quiz and Bubble Game. 

- A number range from 0 to 9,999. 

- A “Monster lab” for added fun and motivation. 

- 12 languages: English, French, German, Italian, Dutch, Spanish, Swedish, Japanese, Chinese, Portuguese, Russian and Korean.

Adobe Flash Player not installed or older than 9.0.115!

* The Montessori Method relies on autonomy and self-confidence. Children should explore the app by touching as many objects as possible, with the support of their parents.