Ratios, rates, proportions

Learn all about proportional relationships. How are they connected to ratios and rates? What do their graphs look like? What types of word problems can we solve with proportions?
Try some practice problems
Learn by doing or check your understanding

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?"

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

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