First a note on language:
A test means that a D6 (regular die) is rolled, the die is compared to one of the thangie's attributes + any skills useful in the situation. If the roll is higher, the thangie fails the test, otherwise the thangie passes.

Sometimes equations are used to modify situations. Symbols used are variables which any number can be inserted into. The same number must be inserted for every occurence of the symbol.

Some skill test examples: