Unit Rate, Rates & Proportions

Front

What is a unit rate?

Back

A unit rate is a rate in which the unit in the denominator is 1.

Front

How do you calculate the unit rate from a total cost and quantity?

Back

To calculate the unit rate, divide the total cost by the quantity.

Front

If 5 cups of dog food contain 1600 calories, how many calories are in 1 cup?

Back

320 calories per cup.

Front

If it snows at a rate of 3 inches per hour, how much snow will accumulate in 2.5 hours?

Back

7.5 inches of snow.

Front

What is the formula to find the total amount when given a rate and time?

Back

Total amount = Rate × Time.

Front

If you spend $40 on 5 pounds of concrete, what is the cost per pound?

Back

$8 per pound.

Front

How do you convert a rate to a unit rate?

Back

Divide the numerator by the denominator to express it per one unit.

Front

If Will spent $3.75 for 3 pounds of granola, what is the unit rate?

Back

$1.25 per pound.

Front

What is the relationship between rates and proportions?

Back

Rates are a type of ratio that compares two quantities with different units, while proportions state that two ratios are equal.

Front

How can you determine if two ratios form a proportion?

Back

Cross-multiply the ratios and check if the products are equal.