Grade 7 Ratios and Proportional Relationships Unit Review

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Which topics have you earned blue ribbons for in Study Island?

• Unit Rate and Constant of Proportionality

• Proportional Relationships

• Ratios and Proportions

• Percents

Draw a graph that represents a proportional relationship.

How do you determine if a table of values represents a proportional relationship?

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Ross is making colored sand for an art project. He mixes 4 scoops of red sand for every 3 scoops of blue sand. Which of the following quantities maintains the ratio Ross wants?

• 12 scoops of red sand for every 9 scoops of blue sand

• 8 scoops of red sand for every 12 scoops of blue sand

• 8 scoops of red sand for every 9 scoops of blue sand

• 10 scoops of red sand for every 8 scoops of blue sand

This graph shows the relationship between miles and leagues. Select the equation that represents the proportional relationship shown in the above graph.

An item is priced at $12.50. If the sales tax is 5%, what does the item cost including sales tax?

• $13.12

• $15.25

• $13.13

• $18.75

A TV that usually sells for $250 is on sale for 20% off. If sales tax on the TV is 5%, what is the price of the TV, including tax?

• $187.50

• $210

• $222.50

• $219.32

Heidi drove to visit her friend one summer. The miles she traveled are shown on the graph.

• 60 miles per hour

• 120 miles per hour

• 360 miles per hour

• 180 miles per hour

In a restaurant, Chad tracked the number of children and adults that came in over an hour. During that time, 4 children and 12 adults came in the restaurant. What is the ratio of adults to children that came into the restaurant?

• 3:5

• 1:3

• 3:2

• 3:1