The term 'fraction describes a number that is being used to define a part of a group and while writing it you can use the term numerator and denominator. Nominator can be used to write the number that is above the line and denominator is being used for the number that is below the line. You can understand the phenomenon with the use of following example: If you write the term ½ you can say that the term is being written in terms of fraction and the digit '1' is called the numerator while '2' represents denominator.

Usually people use the term when they are not able to describe a term in whole number and with the use of decimal point the figure moves on to several numbers after decimal point; fraction make their job quite easy.

Usually people use the term when they are not able to describe a term in whole number and with the use of decimal point the figure moves on to several numbers after decimal point; fraction make their job quite easy.