NC암산 -계산,암산,숫자,게임,수학,연산,중독성

It is a simple game that anyone can use easily.

Simple arithmetic game up your mental abilities

Is the calculation slow?

So you can speed up your calculations with NC arithmetic and do a quick calculation.

Find the answer to the problem of a problem that is changed randomly every time you solve a problem.

Increase your mental ability with repetitive games ~