What is 1.5 in a fraction?

1.5 as a fraction is written as 3/2. This is because the decimal 1.5 can be simplified to 1 1/2 or 3/2 when it is expressed as a common fraction. The numerator of the fraction is 3 and the denominator is 2, indicating that there are three halves in one and a half. This fractional form is useful when comparing and performing arithmetic operations with other fractions or mixed numbers.