How do you express 15% as a decimal?

To express a percentage as a decimal, you divide the percentage value by 100. In this case, to convert 15% to a decimal, you take 15 and divide it by 100, which gives you 0.15.

This is because percentages are essentially a fraction out of 100. Therefore, 15% can be thought of as ( \frac{15}{100} = 0.15 ).

In this context, converting a percentage to a decimal is a fundamental skill that involves understanding the relationship between fractions, decimals, and percentages, and recognizing that 100% represents the whole. Thus, 15% translates directly to 0.15 in decimal form.