4/100 = 4%
The fraction 4/100, or 4%, can show up in everyday situations such as a store discount, a small test error rate, or the chance of rain. For example, a 4% discount means the price is reduced by a small amount, while a 4% error rate means about 4 out of every 100 results may be wrong.
To picture 4% quickly, imagine a group of 100 people, squares, or objects and focus on just 4 of them. It is a little less than 5%, so it is also slightly less than one out of every 20.
A common mistake is thinking that 4% means 4 whole items no matter how large the group is. The amount changes with the total, so 4% of 100 is 4, but 4% of 1,000 is much larger.
