Unit 1 PART A PREP LESSON

Unit Rate Word Problem Practice

Method 1: Computation

Solving with basic math!

Multiple Choice

A skydiver falls 100 feet in 5 seconds. How far does the diver fall per second?

WHAT UNIT ARE WE TRYING TO GET DOWN TO ONE (1) IN OUR UNIT RATE?

• Feet

• Seconds

PER: The key word!

• "Per" means each, or for every one!

• Anytime you see the word PER before a unit, that will be the unit you will try to get down to 1 in your unit rate.

Multiple Choice

A skydiver falls 100 feet in 5 seconds. How far does the diver fall per second?

If we are trying to get SECONDS down to 1 in our unit rate, how will we write our ratio in a/b form?

• 100 feet / 5 seconds

• 5 seconds / 100 feet

A/B Form

• Whatever unit you are trying to get to 1 goes on the bottom!

• Put the other unit on top!

• Match the correct numbers and units from the problem!

• DON'T PUT ONE AT THE BOTTOM YET! USE THE NUMBER FROM THE PROBLEM!

Multiple Choice

A skydiver falls 500 feet in 5 seconds. How far will the skydiver fall per second?

How will you turn your a/b (100/5) ratio into a division problem?

• 100 divided by 5

  $$100\div5$$

• 5 divided by 100 $$5\div100$$

Divide to solve!

• Divide top by bottom!

Multiple Choice

A skydiver falls 100 feet in 5 seconds. How far does the diver fall per second?

• 5

  feet per second

• 1

  feet per second

• 500

  feet per second

• 20

  feet per second

THE ANSWER

• Don't forget to answer the question!

• Put your units on the end of your answer "top unit" PER "bottom unit"

• "feet PER second"

Poll

How comfortable do you feel using the computation method to solve for unit rate problems?

• 4

  I understand and could teach someone else!

• 3

  I understand it!

• 2

  I almost understand and need a little more practice!

• 1

  I don't understand it yet!

Multiple Choice

I worked 38 minutes on 4 assignments. How long did it take per assignment?

• 152

  minutes per assignment

• 9.5

  minutes per assignment

• 9.5

  assignments per minute

• 152

  assignments per minute

Multiple Choice

I paid $10.74 dollars for 3 pounds of ground beef. What is my unit rate in dollars per pound?

• $3.58

  per pound

• $32.22

  per pound

• $0.27

  per pound

• $7.74

  per pound

Multiple Choice

A train is traveling at a constant speed and goes 7.5 meters in 6 minutes.

How far does the train go in 1 minute?

• 45

  meters per minute

• 1.5 meters per minute

• 1.25

  meters per minute

• 0.8 meters per minute

Multiple Choice

If the train travels 1.25 meters per minute... how far will it travel in 100 minutes?

• 125 meters

• 12.5 meters

• 1250 meters

• 1.25 meters

Multiple Choice

I walk 1/5 mile in 1/2 hour. How far will I walk in 1 hour?

• 1/10

  miles per hour

• 5/2

  miles per hour

• 2/7

  miles per hour

• 2/5

  miles per hour

Multiple Choice

I ran 3/4 of a mile in 3/8 of an hour? What is my unit rate?

• 2

  miles per hour

• 6/12

  miles per hour

• 24/9

  miles per hour

• 9/32

  miles per hour

Don't forget to simplify your fractions!