Grade 7 · Ratios and Proportional Relationships

CCSS.MATH.CONTENT.7.RP.A.2a

Decide whether two quantities are in a proportional relationship, e.g., by testing for equivalent ratios in a table or graphing on a coordinate plane and observing whether the graph is a straight line through the origin.

Read this standard on the official Common Core site

Lessons that teach this standard

• Solving Proportions and Cross Multiplication

  What a proportion is, how to solve one by cross multiplying, why cross multiplication works, and how to check whether two ratios form a proportion.