Repeating and terminating are two different types of decimal number.
If a decimal has an end, it can be said to be terminating. 1.255 clearly ends on the last '5', and is therefore terminating.
A repeating decimal is one that never ends. For example, if you were to divide 1 by 3, the answer would be 0.3333333333333333333333... going on forever. You can identify repeating decimals by the dot usually used to represent them: for example, 0.3 with a dot above the 3 is equal to 1/3.
