The expression \( 5 \times \frac{1}{2} \) can be rewritten as the sum of multiple \( \frac{1}{2} \) terms:
\[ 5 \times \frac{1}{2} = \frac{1}{2} + \frac{1}{2} + \frac{1}{2} + \frac{1}{2} + \frac{1}{2} \]
This means that there are five terms of \( \frac{1}{2} \). Thus, the blank in your equation should be filled with \( \frac{1}{2} \):
\[ 5 \times \frac{1}{2} = \frac{1}{2} + \frac{1}{2} + \frac{1}{2} + \frac{1}{2} + \frac{1}{2} \]
So the complete equation is:
\[ 5 \times \frac{1}{2} = \frac{1}{2} + \frac{1}{2} + \frac{1}{2} + \frac{1}{2} + \frac{1}{2} \]