The value of 2+1/2 can be calculated using the order of operations, which is a set of rules that dictate the sequence in which mathematical operations are performed. According to the order of operations, we need to perform any calculations inside parentheses first, then exponents, followed by multiplication and division, and finally addition and subtraction, working from left to right.
In this case, there are no parentheses or exponents, so we can proceed with multiplication and division before addition. The fraction 1/2 can be written as 0.5, so we have:
2 + 0.5 = 2.5
Therefore, the value of 2+1/2 is 2.5.