Solve Problems With Unit Rates

Arlene can solve 100 math problems in 4 hours. What is her unit rate?

• 20 problems per hour

• 25 hours per problem

• 25 problems per hour

• 50 problems per 2 hours

• 15 problems per hour

It costs $216 for 18 movie tickets. What is the unit price?

• $12 per ticket

• $21 per ticket

• $12.50 per ticket

• $15 per ticket

• $22 per ticket

Ms. Zilke walks 15 miles in 3 hours. Mr. Haack walks 27 miles in 9 hours. Who walks faster?

• Neither! They both have the same unit rate.

• Ms. Zilke

• Mr. Haack

• Mr. Sostre

• Mrs. Sklar

A rate is a ratio comparing two quantities with different kinds of ...

• fractions

• parts

• units

• minutes

• numbers

A unit rate is a rate that is simplified so that it has a denominator of ...

• 0

• whole numbers

• 1/2

• 1

Ms. Zilke can type 120 words in 2 minutes. How many words can she type per minute?

• 2 words per minute

• 60 words per minute

• 40 words per minute

• 50 words per minute

• 6 words per minute

A hummingbird beats its wings 159 times in 3 seconds. How many times does it beat its wings per second?

• 45 beats per second

• 53 seconds per beat

• 53 beats per minute

• 53 beats per second

The rate for ONE unit of a given quantity is called a(n) _________. For example, 62 beats per minute

• Unit rate

• Ratio

• Scaling

• Ratio table

The process of multiplying by ratios of 1 (conversion factors) and cancelling units to convert from one measure to another.

• unit analysis

• conversion factors

• ratio tables

• equivalent ratios

If 4 gallons of milk cost $16.76, how much would 7 gallons of milk cost?

• $4.19

• $29.33

• $67.04

• $117.32