Addition and subtraction trainer within 100

A unique application for practicing addition and subtraction for all ages.

Peculiarities:

- No ready-made answers - stimulates mental processes

- Select the difficulty of examples: counting to ten, passing through ten, adding and subtracting two-digit and single-digit numbers, as well as two-digit numbers up to 100

- Selection of questions for training, taking into account previous answers

- Timing to respond, taking into account the complexity of the example

- Assessment for work, according to which you can see progress in learning

- Laconic, minimalistic interface

- Takes up little space on the phone