Convert 50% into a decimal.

To convert a percentage into a decimal, you can follow a simple process: divide the percentage by 100. In this case, 50% means you take 50 and divide it by 100.

Performing the calculation:

50 ÷ 100 = 0.50

Thus, 50% expressed as a decimal is 0.50. This conversion is fundamental in mathematics, particularly in finance and statistics, where percentages are often used to represent proportions.

The other choices do not accurately represent the conversion from 50%. Therefore, the correct answer is indeed 0.5.