Ratios, rates, & percentages

This course is a part of 6th grade, a 8-course Topic series from Khan Academy.

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.

This course contains 9 segments:

Intro to ratios

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.

Equivalent ratios

Visualize ratios

Use double number lines, ratio tables, and tape diagrams to visualize ratios.

Ratio application

Expand on ratios by exploring part:part:whole ratios and ratios on the coordinate plane.

Intro to rates

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!

Intro to percents

Percent literally means "per cent" or "per hundred". Visually identify percents from fraction models and identify equivalent fractions and percents.

Percent, decimal, fraction conversions

Decimals, fractions, and percents are three ways of expressing the same number. For example, 1/2, 0.5, and 50% mean the exact same thing. Learn how to convert decimals and fractions to percents and vice versa.

Percent problems

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

Percent word problems

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