What is a ratio?
Ratios and Proportions Review

Flashcard
•
Mathematics
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b' or a:b.
2.
FLASHCARD QUESTION
Front
How do you write a proportion?
Back
A proportion is an equation that states that two ratios are equal, typically written as a/b = c/d.
3.
FLASHCARD QUESTION
Front
If the ratio of dogs to cats is 5 to 3, how can you find the number of cats if you know the number of dogs?
Back
You can set up a proportion: 5/3 = 25/c, where 25 is the number of dogs. Solve for c to find the number of cats.
4.
FLASHCARD QUESTION
Front
What is the formula to find the total number of chairs needed if you have a certain number of tables?
Back
Total chairs = Number of tables × Chairs per table.
5.
FLASHCARD QUESTION
Front
If 4 apples cost $3, how do you find the cost of 12 apples?
Back
Set up a proportion: 4 apples/$3 = 12 apples/x. Cross-multiply and solve for x.
6.
FLASHCARD QUESTION
Front
How do you calculate earnings per hour if you know total earnings and total hours worked?
Back
Earnings per hour = Total earnings / Total hours worked.
7.
FLASHCARD QUESTION
Front
What does it mean to find the best value in terms of price per ounce?
Back
Finding the best value means comparing the cost of items based on their price per unit (e.g., price per ounce) to determine which offers the most for the least cost.
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