3/10 = 30%
A value like 3/10, or 30%, shows up in everyday life when about three out of every ten people choose something. For example, a survey might find that 30% of students walk to school, or a store might offer a 30% discount.
To picture 3/10 quickly, imagine ten equal sections with three shaded in. It is close to one-third, but a little less, so you can estimate it as roughly three parts out of every ten.
A common mistake is thinking 30% means 30 whole items instead of 30 out of every 100 or 3 out of every 10. The value also does not always mean exactly three people in a small group; percentages are often estimates or depend on the size of the group.