To express the whole number 125 as a fraction or mixed number, we first recognize that 125 can be written as a fraction with a denominator of 1. This gives us:
125 = \( \frac{125}{1} \)
Since 125 is a whole number, it can also be expressed as a mixed number. A mixed number consists of a whole part and a fraction part. In this case, since we have no fractional part, we simply write:
125 = 125 \frac{0}{1}
Both representations, \( \frac{125}{1} \) and 125 \frac{0}{1}, are the simplest forms of expressing the number 125 as a fraction and a mixed number, respectively. There are no common factors other than 1, so the fraction cannot be simplified further.