8/20 = 40%
A value like 8/20, or 40%, can show up in everyday life when a store advertises a discount or a weather report gives the chance of rain. It can also describe how much of a group chose a certain option in a poll.
To picture 8/20 quickly, imagine 20 equal squares with 8 shaded in. That’s a little less than half the whole grid, so it’s easy to estimate at a glance.
One common mix-up is thinking 40% means 40 out of 20, rather than 40 out of 100. The percent sign always means “per 100,” while the fraction’s denominator tells you the size of its original group.
