Understanding Unit Rates

What is a rate?

• A comparison of two quantities with different units

• A comparison of two quantities with the same units

• A comparison of three quantities with different units

• A comparison of two quantities with no units

What distinguishes a unit rate from a regular rate?

• It has a numerator of 1

• It has a denominator of 1

• It has no denominator

• It has a numerator of 0

How do you find a unit rate from a given rate?

• Add the numerator and the denominator

• Subtract the denominator from the numerator

• Multiply the numerator by the denominator

• Divide the numerator by the denominator

What is the result of dividing 400 miles by 4 hours?

• 200 miles per hour

• 100 miles per hour

• 50 miles per hour

• 25 miles per hour

Why are both methods of calculating unit rates correct?

• Because they use different numbers

• Because they ignore the denominator

• Because they multiply the numerator and denominator

• Because they both result in a fraction with a denominator of 1

How can unit rates be useful in everyday life?

• To determine the speed of a car

• To find the price of individual items in a store

• To calculate the area of a room

• To measure the height of a building

What is the cost per treat for a box of 60 Rice Krispie Treats?

• 18 cents

• 20 cents

• 27 cents

• 15 cents

Which box of Rice Krispie Treats is the better buy?

• The box with 16 treats

• The box with 60 treats

• Both are the same

• Neither is a good buy

What should you do to find the better buy between two packs of macaroni and cheese?

• Count the number of boxes in each pack

• Compare the total weight of each pack

• Compare the total price of each pack

• Calculate the unit rate for each pack

Which pack of macaroni and cheese is the better buy?

• The pack with 5 boxes

• Neither is a good buy

• The pack with 18 boxes

• Both are equally priced