**Game suggestion 3.5** is an interesting mental arithmetic training game that can be played by children and adults alike, as the desired level of difficulty of the training game can be adapted to the players (2 or more players can take part in this game) simply by changing the number of dice used.

A selected player creates a string of dice from a maximum of 18 dice (**see picture A**), which contains a code. This is done by unfolding the game insert so that it is not visible to the other players.

The aim of the game is to determine a certain number, which the players calculate in their heads by adding, subtracting and multiplying given numbers. The first person to name the final result wins the game and receives a point. If the number given by the player is wrong, one point is deducted.

The example shown here makes it easy to explain the rules of the game, the coding and the final result, **namely 45**. In this example, the code is read from left to right:

**Description of the 5 codes used:**

A **straight** cube without holes means the number 1 and a **slanted** cube without holes means the number 10 (**see picture B**). If the two dice are next to each other, as shown in picture B, this results in the number 11.

If, for example, 2 **slanted** cubes without holes lie next to each other and 2 **straight** cubes without holes lie to the right of them, this results in the number 22 (**see picture C**).

A **slanted** cube with a hole facing upwards (**see picture D**) means:

The number on the left, or the last intermediate result, is multiplied by the number on the right.

A **straight** cube with a hole facing upwards (**see picture E**) means:

The number on the right is added to the intermediate result.

A **straight** cube with holes on the sides (**see picture F**) means: The number on the left is subtracted from the intermediate result.

The calculation process for the cube string shown above would therefore be as follows for this example code:

3 x 12 = 36 – 12 = 24 + 21 = 45

**Have fun and good luck!**