18/100 = 18%
A value like 18/100, or 18%, can show up in everyday life as a discount, test score, survey result, or chance of something happening. For example, an 18% discount means you save 18 cents for every dollar of the original price.
To picture 18% quickly, imagine 100 small squares with 18 of them shaded. It is a little less than one-fifth, since one-fifth is 20%, so you can estimate it as about one out of every five.
A common mistake is thinking 18% means 18 whole items instead of 18 out of every 100. The actual amount depends on the total, so 18% of 50 is much smaller than 18% of 500.
