10/20 as a percentage is 50.00%. This simple fraction halves the whole, so the result lands right at the middle point of a full 100 % scale.
Seeing 10 out of 20 as a half helps you quickly understand many everyday situations—like scoring 10 points on a 20‑point quiz or splitting a pizza into two equal parts.
Remember, whenever you encounter a fraction that reduces to 1/2, you can safely think of it as 50.00% without doing any extra math.
