How do you convert 3 to a percentage?

To convert a number to a percentage, you multiply it by 100 and then add the percentage symbol (%). In this case, the number is 3.

When you perform the calculation:

3 × 100 = 300

This means that 3 can be expressed as 300% when converted into a percentage form. Therefore, the correct answer is 300%.

This method is essential for understanding how to express any whole number as a percentage, since percentages represent a fraction out of 100. Thus, the reasoning behind arriving at 300% is based on the fundamental principle of percentage conversion.