210/525 = 40%
A fraction like 210/525, or 40%, can show up in everyday situations such as test scores, survey results, or a store sale. For example, if 40% of students choose pizza for lunch, that means 4 out of every 10 students prefer it.
To picture 40% quickly, imagine a group divided into 10 equal parts and shade 4 of them. It is a little less than half, so you can estimate it as close to 50% without thinking of it as a tiny amount.
A common mistake is confusing 40% with 40 percentage points or with 40 whole items. The actual number of items depends on the total, so 40% of 20 is much smaller than 40% of 500.
