Lesson 2: Proportions

Here is a PDF version of the lesson.

Here is a PDF version of the workbook containing lots of practice.

In this lesson you will learn about proportions, their importance, how to set them up and how to solve them.

A proportion is an equivalent relationship of quantities.

We often use proportions to convert to or from percentages.

For example, what is 10% of 45?

We can set up a proportion: 45 corresponds to 100%, then what corresponds to 10%?

10 : 100 = n : 45

n = (45 x 10)/100

Additional practice will help you master the skills. 

Free math quizGrade 8 Proportions Quiz

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