How do you write twenty and one half inches?

Answer 1

20 and 1/2 in. (inches)

Answer 2

To write twenty and one half inches, you would write it as "20 1/2 inches" or "20.5 inches." The fraction 1/2 can be converted to a decimal by dividing the numerator (1) by the denominator (2), which equals 0.5. Therefore, you can also express it as a decimal measurement, such as 20.5 inches.