First convert \(\frac{3}{50}\) to a decimal.

• \(\frac{3}{50} = 3 \div 50 = 0.06\).
• So the equation is: 3.56 = ____ + 0.06.
• ____ = 3.56 − 0.06 = 3.50.
• 3.50 = \(3\frac{1}{2}\).

Final Answer: A: \(3\frac{1}{2}\)