45/55 as a percentage is 81.82%. This number tells you how much of a whole the fraction represents when it’s turned into a percent. It’s a quick way to compare the size of the fraction to other values.
The fraction 45/55 can also be simplified to 9/11, which still gives the same percentage. Seeing it as 81.82% helps you understand that it’s just a little under 5/6 (which would be about 83.33%).
When you work with percentages in everyday tasks—like grading, budgeting, or sports stats—knowing that 45/55 equals 81.82% lets you make fast, accurate judgments without extra calculations.
