Unit Rates Plus

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities where one of the quantities is expressed as one unit. For example, if a car travels 150 miles in 3 hours, the unit rate is 50 miles per hour.

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the first quantity by the second quantity. For example, if you have 60 apples for $3, the unit rate is 60 apples ÷ 3 dollars = 20 apples per dollar.

Front

What are the units of measurement for speed?

Back

The units of measurement for speed are typically expressed in miles per hour (mph) or kilometers per hour (km/h).

Front

If a recipe requires 4 cups of flour for 2 cakes, what is the unit rate of flour per cake?

Back

The unit rate is 2 cups of flour per cake (4 cups ÷ 2 cakes = 2 cups per cake).

Front

What is the formula to find the cost per item?

Back

The formula to find the cost per item is: Cost per item = Total cost ÷ Number of items.

Front

If a car travels 300 miles in 5 hours, what is the speed in miles per hour?

Back

The speed is 60 miles per hour (300 miles ÷ 5 hours = 60 mph).

Front

How do you determine which is the better buy when comparing prices?

Back

To determine the better buy, calculate the unit price for each option and compare them. The option with the lower unit price is the better buy.

Front

What is the unit rate of $40 for 5 pounds of concrete?

Back

The unit rate is $8 per pound ($40 ÷ 5 pounds = $8 per pound).

Front

If a store sells 10 notebooks for $15, what is the cost per notebook?

Back

The cost per notebook is $1.50 ($15 ÷ 10 notebooks = $1.50 per notebook).

Front

What is the relationship between unit rates and ratios?

Back

Unit rates are a specific type of ratio that compares a quantity to one unit of another quantity.