Percents in Everyday Life
A percent is a way to show a part of one hundred. The word comes from two old words that mean "for each hundred." If a quiz has 100 questions and you get 90 of them right, you scored 90 percent. The symbol for percent looks like this: %.
You can find percents all around you. A store might put a sign in the window that says 25% off, which means you save 25 cents for every dollar the item costs. If a game costs $20, then 25% off takes away $5, because one quarter of 20 is 5, so you would pay $15.
Percents help us compare things that are different sizes. Imagine that one team won 6 of its 10 games, while another team won 9 of its 20 games. The totals are different, so it is hard to compare the two teams. Changing both results to percents makes the comparison easy. The first team won 60 percent of its games, and the second team won 45 percent.
Weather reports also use percents. A 70% chance of rain means that, on days with weather like today's, it rained on about 70 out of every 100 of them. You might decide to pack an umbrella. Learning how percents work helps you shop, play, and plan wisely.