What is .5 as a fraction?

In decimal form, the number 0.5 can be written as the fraction 1/2. This is because 0.5 is half of one (0.5 = 1/2).

In fraction form, 0.5 can also be written as 5/10 or 50/100, since these fractions are equal to 1/2 when simplified.

The fraction 1/2 represents a ratio of one part out of two equal parts, or one half of a whole. The numerator (1) represents the part being considered, while the denominator (2) represents the total number of parts that make up the whole.