Ratio and Proportional Relationships

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a:b'.

Front

What is a unit rate?

Back

A unit rate is a rate that compares a quantity to one unit of another quantity, such as miles per hour or price per item.

Front

How do you calculate the unit cost?

Back

To calculate the unit cost, divide the total cost by the number of units purchased.

Front

What does a ratio of 5:3 mean in a group of students?

Back

It means that for every 5 students of one type, there are 3 students of another type.

Front

If 4 apples cost $2, what is the cost per apple?

Back

$0.50 per apple.

Front

What is the formula for finding a unit rate?

Back

Unit Rate = Total Quantity / Number of Units.

Front

How can you determine which store offers the best buy?

Back

Compare the unit prices of the items at each store.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, showing the same relationship between the two quantities.

Front

If a car travels 120 miles in 2 hours, what is its speed in miles per hour?

Back

60 miles per hour.

Front

What is a proportional relationship?

Back

A proportional relationship is one where two quantities increase or decrease at the same rate.