Unit Rates and Proportional Relationships Review

Flashcard
•
Mathematics
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a unit rate?
Back
A unit rate is a comparison of two different quantities where one of the quantities is expressed as one unit. For example, if you travel 60 miles in 2 hours, the unit rate is 30 miles per hour.
2.
FLASHCARD QUESTION
Front
How do you determine if two ratios are proportional?
Back
Two ratios are proportional if they can be simplified to the same fraction or if their cross products are equal.
3.
FLASHCARD QUESTION
Front
What does it mean for a relationship to be proportional?
Back
A relationship is proportional if it can be represented by a straight line that passes through the origin on a graph.
4.
FLASHCARD QUESTION
Front
What is the formula for finding a unit price?
Back
The unit price is found by dividing the total price by the number of units. For example, if a 12-pack of soda costs $6, the unit price is $6 ÷ 12 = $0.50 per soda.
5.
FLASHCARD QUESTION
Front
If a recipe calls for 2 cups of flour for every 3 cups of sugar, is this a proportional relationship?
Back
Yes, because the ratio of flour to sugar remains constant.
6.
FLASHCARD QUESTION
Front
What is the unit rate of 48 oz Slurpee for $1.44?
Back
The unit rate is $1.44 ÷ 48 oz = $0.03 per ounce.
7.
FLASHCARD QUESTION
Front
If Andy drove 28 miles in 25 hours, what is his speed in miles per hour?
Back
His speed is 28 miles ÷ 25 hours = 1.12 miles per hour.
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