1. What is the primary purpose of using a double number line to model a ratio?
2. A recipe calls for 4 cups of sugar for every 2 batches of cookies. Following this ratio, you would need ___ cups of sugar to make 6 batches of cookies.
3. A hose fills a small pool with 90 gallons of water in 3 minutes. At this constant rate, how many gallons would be in the pool after 1 minute? The answer is ___ gallons.
4. A train travels 150 miles in 2 hours at a constant speed. Following this rate, how far will the train travel in 3 hours?
5. Maria can read 50 pages of a book in 40 minutes. If she continues reading at the same pace, she can read 100 pages in ___ minutes.
6. A car traveled 330 miles on 10 gallons of gasoline. What is the car's fuel efficiency as a unit rate in miles per gallon? ___ miles per gallon.
7. Which of the following is the best example of a unit rate?
8. A 20-ounce bottle of juice costs 5 dollars. What is the unit price in dollars per ounce? ___ dollars per ounce.
9. A bicyclist travels 45 miles in 2.5 hours. What is her average speed in miles per hour?
10. Leo earned 105 dollars for 6 hours of work. At this same pay rate, how much would he earn for working 8 hours? ___ dollars.