Question

3.
0.5
× 9
———

Explanation:

Step1: Rewrite decimal as fraction

$0.5 = \frac{1}{2}$

Step2: Multiply fraction by integer

$\frac{1}{2} \times 9 = \frac{9}{2}$

Step3: Convert to decimal (optional)

$\frac{9}{2} = 4.5$

Answer:

$4.5$