To find out if the fraction terminates or repeats, we have to solve the long division and see what happens with the residue:
notice that each time we divide we will get 2 as the residue, therefore, the fraction 5/6 repeats.
Next, for 3/12 we have the following:
in this case, we have that the residue is 0, then, the fraction 3/12 terminates.
Doing the same as the previous cases, we have the following for the last fractions:
then, the fractions 8/18 and 1/11 repeat