write 0.5 as a fraction.

Explanation:

Step1: Identify decimal place value

0.5 is five - tenths.

Step2: Write as a fraction

$0.5=\frac{5}{10}$

Step3: Simplify the fraction

$\frac{5\div5}{10\div5}=\frac{1}{2}$

Answer:

$\frac{1}{2}$