Solving Problems with Ratios

7th Grade•60 minutes•CCSS 7.RP.A.2

Learning Objective

I can solve problems involving proportional relationships using ratios.

A proportion is when two ratios are equivalent to each other.

In order for two ratios to be equivalent, they must have the same value and the same units.

If you know three of the numbers in a proportion, you can find the missing number by using cross-multiplication.

This lesson includes 12 practice questions to reinforce learning.

View questions preview

1. What is a proportion?

2. Why is it important for the units to be the same in both ratios of a proportion?

3. Explain the purpose of cross-multiplying in solving proportions.

...and 9 more questions

Math Antics - Proportions

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