Developing Proportional Reasoning

Multiple Choice

The local Rec League orders 8 soccer balls for every 12 students. The table shows how many soccer balls the league orders for a certain numbers of students. How many soccer balls do you predict the league would order for 48 students?

• 36

• 40

• 32

Fill in the Blank

The table below represents a relationship between the time a turtle walks and the distance the turtle travels. What is the unit rate, in feet per minute, represented in this table?

Multiple Choice

Which of the following ratios are NOT equivalent to 5:6?

• 10:12

• 15:18

• 16:20

• 20:24

Categorize

Options (8)

(6, 8)

(9, 12)

(15, 20)

(21, 28)

(1, 2)

(6, 4)

(24, 30)

(36, 60)

Ned sells 3 cookies for $4.

Sort the ordered pairs into the correct categories below!

EQUIVALENT RATIOS

NOT EQUIVALENT

Multiple Choice

What will students use to understand how a proportional relationship can exist between quantities?

• Models

• Graphs

• Equations

• Diagrams

Multiple Choice

What is the ratio of flour to water in the pizza dough recipe?

• 3:1

• 2:1

• 4:1

• 1:1

Fill in the Blank

Henry claims In-N-Out is 2 1/2 miles from his house, but the map shows it to be 3/4 inches away. What is the unit rate expressed in miles per inch?

Multiple Choice

What is the ratio of cups of flour to cups of water in one batch?

• 1:3

• 3:1

• 2:1

• 4:1

Fill in the Blank

Doritos $4.39 for 11.5 oz. 
or
Cheetos $2.24 for 9.75 oz.
Find the unit price of each and choose the better deal.

(type either "Doritos" or "Cheetos"

Multiple Choice

A cake recipe calls for 1.5 cups of milk and 3 cups of flour. Seth made a mistake and used 5 cups of flour. How many cups of milk should he use to keep the proportions correct?

• 2.5 cups milk
• 1.75 cups milk
• 2 cups flour
• 2.25 cups milk

Open Ended

Is the relationship proportional? Explain how you know.

Multiple Choice

What will be the ratio of Pedro's age to his brother's age in five years?

• 19:12

• 12:19

• 14:12

• 19:14

Multiple Choice

The table shows how a cell phone store calculates items from its checking register. Based on the table, which equation represents a non-proportional relationship?

• p=12.5c-24,500

• r=1.75w

• s=55.95c

• w=10.25h

Fill in the Blank

The current ratio of Father's age to son's age is 15:4. Ten years  from now their ages will be in the ratio of 5:2. What is the current age of son.

Open Ended

Is the relationship between the vinegar and water in the recipe and the vinegar and water in Elyse’s cleaning solution a proportional relationship? Explain.

Fill in the Blank

Use the shapes in the picture to write the ratio of STARS to SQUARES. (use "to")

Fill in the Blank

The ratio of makes to misses for Trae Young was 3:2 in his last game. If he missed 10 shots, how many did he make?

Fill in the Blank

A factory makes wireless earbuds and headphones. There is a proportional relationship between the number of each item the factory produces and the cost of production. It costs the factory $1,050 to produce 30 pairs of earbuds. The table shows the cost to produce different numbers of headphones. Which item is more expensive to make?

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident