Final answer:
Option B (0.52 x 230) is the correct expression to calculate 52% of 230, by converting the percentage to a decimal and multiplying by the number.
Step-by-step explanation:
The expression to find 52% of 230 is 0.52 × 230, which is option B. To find the percentage of a number, you convert the percentage to a decimal and then multiply by the number. For instance, 52% as a decimal is 0.52, and therefore, 52% of 230 is calculated by multiplying 0.52 by 230. This is a common calculation in mathematics, useful in various real-world applications, such as calculating discounts, data analysis, and financial projections.