Convert Mixed Number 1½ to a Decimal

To solve this problem, we'll convert the mixed number $1\frac{1}{2}$ into a decimal:

First, we need to convert $\frac{1}{2}$ into a decimal. The fraction $\frac{1}{2}$ is equivalent to $\frac{5}{10}$, because multiplying both the numerator and the denominator by 5 gives us:

• $\frac{1 \times 5}{2 \times 5} = \frac{5}{10}$

Thus, $\frac{1}{2}$ can be represented as $0.5$ in decimal form.

Next, we incorporate this decimal into the whole number part of our mixed number. Our mixed number was $1\frac{1}{2}$, so we simply add the decimal $0.5$ to the whole number 1:

• Whole number: 1
• Decimal from fraction: 0.5

By combining these values, we have:

• $1 + 0.5 = 1.5$

The decimal representation of $1\frac{1}{2}$ is therefore $1.5$.

Therefore, the correct answer is $1.5$.