13/100 = 13%
The fraction 13/100, or 13%, can show up in everyday life as a sale discount, a test score, or a chance of rain. For example, a store might take 13% off a jacket, or a weather report might say there is a 13% chance of showers.
To picture 13% quickly, imagine a grid of 100 small squares with 13 shaded. It is a little more than one-tenth, so you can estimate it as slightly above 10%.
A common mistake is thinking 13% means 13 out of 10 instead of 13 out of 100. It is also easy to confuse a 13% discount with paying 13% of the original price, when a discount means you pay the amount left after taking 13% off.