Lesson 9
Presentation
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Illustrative Mathematics
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6th - 8th Grade
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Practice Problem
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Hard
Jenin Ali
FREE Resource
8 Slides • 9 Questions
1
2
Multiple Choice
Which of the following best describes a unit rate?
A comparison of two quantities with different units
A ratio where the second quantity is always 1
A fraction with a numerator of 1
A comparison of two equal quantities
3
4
5
Open Ended
Explain how to find the unit rate of water to vinegar in the fabric softener recipe. What does the unit rate mean in this context?
6
Multiple Choice
If Helena uses 1 1/4 cups of water to make fabric softener, how much vinegar does she need?
1/2 cup
1 cup
2 cups
2 1/2 cups
7
8
Open Ended
Show how to find the unit rate of oats to quinoa using the granola bar recipe. Tell what the unit rate means.
9
10
Multiple Choice
Use division to find the price per ounce for the bulk cranberries and the package of cranberries. Round to the nearest cent. (1 pound = 16 ounces)
Bulk: $0.15/oz, Package: $0.19/oz
Bulk: $0.19/oz, Package: $0.15/oz
Bulk: $0.20/oz, Package: $0.18/oz
Bulk: $0.18/oz, Package: $0.20/oz
11
12
Open Ended
Brandi jogged 2 1/2 miles in 30 minutes. Sharna jogged 3 1/2 miles in 3/4 hour. Who jogged at a slower rate? Show your work.
13
14
15
Multiple Choice
Rida and Elisa are each paid by the hour. Rida worked 5 1/2 hours and earned $77. Elisa worked 3 3/4 hours and earned $60. Whose hourly rate is greater?
Rida
Elisa
Both have the same rate
Cannot be determined
16
Open Ended
After learning about ratios and unit rates, what is one real-life situation where you could use these concepts?
17
Open Ended
What is a unit rate, and why is it useful when comparing quantities?
Show answer
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