Ratios and Proportions Mid-Year Review

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, showing how many times one value contains or is contained within the other.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you find the unit rate?

Back

To find the unit rate, divide the quantity by the number of units. For example, for 330 miles in 6 hours, the unit rate is 330 ÷ 6 = 55 miles per hour.

Front

If lions sleep 5 out of every 6 hours, how many hours do they sleep in a day?

Back

Lions sleep 20 hours per day, calculated as (5/6) * 24 = 20.

Front

Solve the proportion: 18/24 = x/4. What is x?

Back

x = 3.

Front

How do you calculate the price per ounce?

Back

To calculate the price per ounce, divide the total price by the total ounces. For example, $3.20 for 18 ounces is $3.20 ÷ 18 = $0.178 per ounce.

Front

What is the cost per ticket if 17 tickets cost $144.50?

Back

The cost per ticket is $8.50, calculated as $144.50 ÷ 17.

Front

What is a unit rate in the context of speed?

Back

A unit rate in speed is the distance traveled per unit of time, such as miles per hour.

Front

How can you determine which store has a lower price per ounce?

Back

Calculate the price per ounce for each store and compare them. The store with the lower price per ounce is the better deal.

Front

What does it mean if two ratios are equivalent?

Back

If two ratios are equivalent, it means they represent the same relationship between quantities.