SLIDES - Proportional Reasoning

Multiple Choice

Which ratio is equivalent to 3:4

• 4:5

• 6:8

• 3:3

• 4:3

Multiple Choice

Which ratio is equivalent to 4:12

• 4:2

• 1:3

• 3:4

• 2:24

Multiple Choice

Are these ratios equivalent?

2:3 and 8:12

• Yes

• No

Open Ended

Why do manufacturers keep aspect ratios the same across TV sizes?

Open Ended

A butter cookie recipe calls for 250 g of butter and 170 g of sugar. How much sugar is needed if there is 625 g of butter?

Multiple Choice

A hiker want to determine the height of a cliff. She has measured her height (5.8ft) and shadow (7ft). She knows the cliff casts a shadow of 50ft. How tall is the cliff?

• 41.4ft

• 31.6ft

• 35.6ft

Multiple Choice

A 6 ft person casts a 4 ft shadow. At the same time, a building casts a 30 ft shadow.

How tall is the building?

• 45 ft
• 36 ft
• 50 ft
• 30 ft

Multiple Choice

Recipe: 2 cups flour makes 12 cookies.

How many cookies per cup of flour?

• 10
• 8
• 6
• 4

Multiple Choice

A runner covers 5 miles in 40 minutes. What is his minutes per mile?

• 6 minutes per mile
• 8 minutes per mile
• 10 minutes per mile
• 7 minutes per mile

Multiple Choice

A printer produces 300 pages in 10 minutes. What is the rate per minute?

• 25 pages per minute
• 30 pages per minute
• 15 pages per minute
• 50 pages per minute

Multiple Choice

Scenario - Think-Pair-Share

Two stores sell rice:

• Store A: 10 lbs for $8.90
  
  

• Store B: 25 lbs for $21.25
  
  

Which is the better buy? How much cheaper per pound is it?

• Store B is the better buy, $0.04 cheaper per pound.
• Store A is the better buy, $0.05 cheaper per pound.
• Store A is the better buy, $0.10 cheaper per pound.
• Store B is the better buy, $0.02 cheaper per pound.

Multiple Choice

Write if the given proportion is 'True' or 'False':
8 : 9 = 24 : 18

• TRUE
• FALSE
• dont know
• none of these

Multiple Choice

Solve for x

• 45 ft
• 50 ft
• 36 ft

Multiple Choice

There are 8 teacher and 40 students going on a field trip. If 20 more students decided to go on the field trip, then how many more teachers must go to keep it proportional?

• 5 more teachers
• 4 more teachers
• 2 more teachers
• none

Multiple Choice

Kiara downloaded 264 pictures from her cell phone to her computer. These pictures took up 528 megabytes of space on her computer. Each picture took up the same amount of space.

How many megabytes do 35 of these pictures take up?

• 18 MB

• 70 MB

• 8 MB

• 23 MB

Multiple Choice

is this situation proportional?
A plumber charges 50.00 to make a house call.  He also charges 25.00 per hour for labor.

• yes it is proportional
• no it is not proportional