What is a ratio?
Ratios, Rates & Proportions

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•
Mathematics
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A ratio is a comparison of two quantities by division, showing how many times one value contains or is contained within the other.
2.
FLASHCARD QUESTION
Front
What is a rate?
Back
A rate is a specific kind of ratio that compares two different units, such as miles per hour or cost per item.
3.
FLASHCARD QUESTION
Front
What is a unit rate?
Back
A unit rate is a ratio that has a denominator of 1, representing how much of one quantity corresponds to one unit of another quantity.
4.
FLASHCARD QUESTION
Front
How do you find a unit rate from a total?
Back
To find a unit rate, divide the total quantity by the number of units. For example, if there are 120 customers in 6 hours, the unit rate is 120 ÷ 6 = 20 customers per hour.
5.
FLASHCARD QUESTION
Front
Are the ratios 15:5 and 25:10 equivalent?
Back
No, they are not equivalent. 15:5 simplifies to 3:1, while 25:10 simplifies to 5:2.
6.
FLASHCARD QUESTION
Front
What is the first step to solve a proportion?
Back
The first step is to cross-multiply the two ratios to check for equivalence.
7.
FLASHCARD QUESTION
Front
If 6 gallons of gasoline cost $15, how much does 1 gallon cost?
Back
1 gallon costs $15 ÷ 6 = $2.50.
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