12/100 = 12%
A value like 12/100, or 12%, can show up in everyday life as a discount, a test score, or a chance of rain. For example, a store might take 12% off an item, or a weather forecast might say there is a 12% chance of rain.
You can picture 12% as 12 shaded squares in a grid of 100 equal squares. It is a little more than one-tenth, so estimating it as “about 10%” can help you understand its size quickly.
A common mistake is thinking 12% means 12 whole items out of any group, no matter how large or small the group is. It always describes 12 parts out of 100 equal parts, so the actual number depends on the total amount.