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Ratios & Percentages
Ratios & Percentages
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Ratios & Percentages

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Ratios, proportions, and percentages help us compare and measure things. This can help you measure popularity, or find how rare something might be, or see into the future by giving you a sense of how likely something is to happen.

Ratios and percents rock. You'll use them all the time.

 

Pre-Algebra

Ratios and percentages show up everywhere. Anytime two or more quantities are compared, a ratio is there to lend a hand. Percents are particularly cool because "out of 100" is really easy to understand without much thought. If you hear that there's a 90% chance of rain, you'll probably know right away that it's time to grab the umbrella.

Here's an example taken from the news:

Start Here: Ratios & Percentages Topics


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