We play simple mathematical addition and subtraction on speed. In this game you need to choose the right result for speed.

Minimal skills of counting, sense of number - the same element of human culture as literate writing and speech, mastering a foreign language, a basic understanding of art and the world around it.

There are only four basic mathematical actions - addition, subtraction, multiplication and division. Each action has its own characteristics, but they are not complex. You have to figure it out once, and then practice for 5-10 minutes a day, and very soon you will feel that you think better. Most likely, in two or three months you will reach a decent enough level, which can be supported by episodic training.

Good Math calc: