3/30 = 10%
A value like 3/30, or 10%, can show up in everyday life as a discount, a survey result, or a chance of rain. For example, a store might offer 10% off, or 3 out of 30 students might choose the same favorite book.
To picture 3/30 quickly, imagine 30 equal spaces with only 3 shaded. That is a small section—about one part out of every ten—so it is easy to recognize as much less than one-half.
A common mistake is thinking 10% means 10 whole items instead of 10 out of every 100 or one-tenth of a group. The actual number of items depends on the total, so 10% of 30 items is different from 10% of 300 items.
