13/26 = 50%
The fraction 13/26 represents 50%, or half of a whole. A value like this can show up when half the students in a class choose one activity, half a pizza is left, or half of a discount has been used.
You can picture 13/26 as 13 shaded pieces out of 26 equal pieces. Since the shaded and unshaded parts would be the same size, you can quickly estimate it as one-half or halfway.
A common mistake is thinking that 13/26 is less than half because 13 and 26 are different numbers. In fact, the numerator is exactly half of the denominator, so the fraction describes an even split.