40/100 as a percentage is 40.00%. This fraction represents the same amount as 40 percent of a whole, and the percentage is shown with two decimal places for precision.
The fraction 40/100 can also be simplified to 2/5. Both forms describe the same portion of a whole, just expressed in different ways. When you see 40 % on a chart or label, it means the same thing as the fraction 40/100.
In everyday use, people often round percentages to whole numbers, so 40 % is common. However, writing it as 40.00% keeps the format consistent when other values need two decimal places.
Understanding that fractions and percentages can be interchangeable helps you compare parts of a whole quickly, whether you're looking at test scores, discounts, or data charts.
