For example, we may be asked to add such numbers as 4.1 and 32.31582. The answers to these questions depend on how the numbers originally arise.
Some decimals are finite or are considered as such because of their use.
Such numbers are said to be finite. Counting numbers are finite. Dollars and cents are examples of finite values. Notice that the end zeros were added to 0.5 to carry it out the same number of places as 0.125. It is not necessary to write such place-holding zeros if the figures are kept in the correct columns and decimal points are aligned.