What is the term for the number found below the fraction bar in a fraction?

The number found below the fraction bar in a fraction is called the denominator. The denominator indicates into how many equal parts the whole is divided. For example, in the fraction ¾, the number 4 is the denominator, which shows that the whole is split into four equal parts.

Understanding the role of the denominator is crucial because it helps to determine the size of each part and combines with the numerator—the number above the fraction bar—to convey a ratio or a portion of a whole. The relationship between the numerator and the denominator defines the fraction's value and is essential for performing mathematical operations involving fractions, such as addition, subtraction, multiplication, and division.