Add Like Mad - educational game

Add Like Mad is a free online flash game of the category educational games.

In this educational game of mental arithmetic, the goal is to complete as quickly as possible additions. Although calculating is not enough here, you also do it quickly!

Click on the numbers whose sum is equal to the value indicated below. If the sum of the numbers is greater than the value required, you must start over. If you add up the numbers quickly, you get a better score.
(Automatic translation)

A context menu should be shown when right-clicking or, on touch devices, long-pressing in the game. This menu especially allows to play in full screen and control the volume.