Lesson 7
Creating Double Number Line Diagrams
Problem 1
A recipe for cinnamon rolls uses 2 tablespoons of sugar per teaspoon of cinnamon for the filling. Complete the double number line diagram to show the amount of cinnamon and sugar in 3, 4, and 5 batches.
Solution
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Problem 2
One batch of meatloaf contains 2 pounds of beef and \(\frac{1}{2}\) cup of bread crumbs. Complete the double number line diagram to show the amounts of beef and bread crumbs needed for 1, 2, 3, and 4 batches of meatloaf.
Solution
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Problem 3
A recipe for tropical fruit punch says, “Combine 4 cups of pineapple juice with 5 cups of orange juice.”
- Create a double number showing the amount of each type of juice in 1, 2, 3, 4, and 5 batches of the recipe.
- If 12 cups of pineapple juice are used with 20 cups of orange juice, will the recipe taste the same? Explain your reasoning.
- The recipe also calls for \(\frac13\) cup of lime juice for every 5 cups of orange juice. Add a line to your diagram to represent the amount of lime juice in different batches of tropical fruit punch.
Solution
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Problem 4
One batch of pink paint uses 2 cups of red paint and 7 cups of white paint. Mai made a large amount of pink paint using 14 cups of red paint.
- How many batches of pink paint did she make?
- How many cups of white paint did she use?
Solution
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(From Unit 2, Lesson 4.)Problem 5
- Find three different ratios that are equivalent to the ratio \(3:11\).
- Explain why your ratios are equivalent.
Solution
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(From Unit 2, Lesson 5.)Problem 6
Here is a diagram that represents the pints of red and yellow paint in a mixture.
Select all statements that accurately describe the diagram.
The ratio of yellow paint to red paint is 2 to 6.
For every 3 pints of red paint, there is 1 pint of yellow paint.
For every pint of yellow paint, there are 3 pints of red paint.
For every pint of yellow paint there are 6 pints of red paint.
The ratio of red paint to yellow paint is \(6:2\).
Solution
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(From Unit 2, Lesson 2.)