# Ratios, rates, & percentages

Contents

Ratios, rates, and percentages are some of the most useful math concepts in real life (and what is REAL life anyway, huh?). From baking recipes to sports, these concepts wiggle their way into our lives on a daily basis.

See how you score on these 17 practice questions

Ratios show up everywhere in life—sports, finance, medicine, cooking, you name it! In this tutorial, we learn what ratios are and how to use them.

Practice solving ratio word problems like, "If 60 cherries go in 3 pies, how many cherries go in 9 pies?"

Learn about a special type of ratio called a rate. A rate is the ratio of two measurements that have different units such as 10 kilometers per hour or 12 hot dogs per minute!

Percent literally means "per cent" or "per hundred". Learn how to rewrite fractions as percents and vice versa.

Decimals and percents are two ways of expressing the same number. For example, 0.5 and 50% mean the exact same thing. Learn how to convert decimals to percents and vice versa.

Learn how to solve percent problems like these: What is 80% of 25? Three is what percent of four?

Learn how to solve a variety of word problems involving percentages.