mental arithmetic 4th grade

Đây là một trò chơi vui nhộn và dễ dàng giúp con bạn học toán một cách nhanh chóng.

This app helps you to solve math problems like addition, subtraction, multiplication and division.

Rules of the game: To answer each question you have about 30 seconds. If you answer the question right you get points. If you answer any question wrong you loose a heart and points too. The game is over when you have lost all your hearts or when the time is up. At the end of a task there is a rating system which shows you how well you did. In addition, this arithmetic game has a top-score. You have an infinite number of chances to improve your mathematic skills playing this game.

Tasks performed by the mental arithmetic app:

➕ Addition

➖ Subtraction

✖️ Multiplication

➗ Division

Have fun.