To convert the fraction 5 2 into a decimal, we first recognize that 5 2 represents the mixed number 5 and 2/10. This can be broken down into two parts: the whole number part (5) and the fractional part (2 divided by 10).
Starting with the fractional part, dividing 2 by 10 gives us 0.2. Adding this to the whole number part:
5 + 0.2 = 5.2
Therefore, 5 2 as a decimal is 5.2.