Unit Rates and Ratio Tables

Ratio, Rates, Unit Rates, proportions & Percent Proportions

Review

Ratios

• Must be written as the question asked when comparing 2 quantities

• Must be simplified, but left as a comparison of the quantities

• Ratios have many equivalent forms and a ratio table is a great visual to see those equivalent forms

Multiple Choice

There are 7 ushers and 11 technicians helping at the Harper Middle School fall play. What is the ratio of technicians to all helpers?

• 7:11

• 11:7

• 11:18

• 18:11

Multiple Choice

Which number will complete the equivalent ratio for 4:12?

20:_____

• 60

• 48

• 12

• 2

Multiple Choice

What is an equivalent ratio for 5 dogs to 3 cats?

• 15 to 9

• 10 to 9

• 9 to 15

• 9 to 10

Multiple Choice

Which of the following ratios are NOT equivalent to 1/2?

• 3:6

• 12:24

• 10:15

• 8:16

Multiple Choice

There are 15 boys out of 23 students. What kind of ratio is this?

• Part to Part

• Whole to Part

• Part to Whole

Multiple Choice

You spend 2 hours watching T.V. then spend 8 hours sleeping. What is the ratio of sleep to T. V. ?

• 8:2

• 4:1

• 2:8

• 1:8

Unit Rates

• Are rates simplified to 1

• Always you to compare similar rates when you know the value of 1

• Easier to manage in fraction form with a denominator of 1

Multiple Choice

An eight pack of juice boxes costs $4.79, and a 12 pack of juice boxes cost $7.59. Use this information to calculate the better buy.

• 8 boxes

• 12 boxes

• Neither

Multiple Choice

Fruit Loops at 17 ounces for $3.68 or Apple Jacks at $2.89 for 13 oz , which is the better buy?

• Apple Jacks

• Fruit Loops

• Neither

Proportions

• Are two equivalent ratios

• Use to find missing parts of an equivalent ratio

• Need to be set up with LABELS - ALWAYS

• Part to Part, Part to whole or whole to part- READ THE QUESTION, before setting up your proportion

Multiple Choice

The ratio of a quarterback's completed passes to attempted passes is 7 to 8. If he attempted 24 passes, how many did he complete?

• 21

• 3

• 8

• 27

Multiple Choice

It takes Emma 18 minutes to type and spell check 14 pages of manuscript. How long will it take her to type and spell check 77 pages?

• 18

• 60

• 99

• 1,386

Multiple Choice

If a car travels 280 miles in 7 hours, how far will it travel in 12 hours?

• 480

• 84

• 25

• 1,960

Multiple Choice

A baseball player makes 4 hits in every 7 times at bat. At this rate, if he made 24 hits, how many times was he at bat?

• 24

• 42

• 96

• 168

Multiple Choice

There are 32 boys and 18 girls in the math hallway 1st period. 10 boys and 5 girls bring their lunch to school. At this rate, if there are 150 students, how many bring their lunch to school?

• 75

• 25

• 100

• 45

Measurement Proportions

• Convert from one measurement to either a smaller or larger one.

• Need unit rate off of the STAAR CHART, so LOOK IT UP!!!!!!

• Are solved just like a proportion, so SET IT UP WITH LABELS!!!!!!

Multiple Choice

Jacob's dad bought a bag of flour that has a mass of 5 kilograms. What is the mass of the flour in grams?

• 0.5 grams

• 50 grams

• 500 grams

• 5000 grams

Multiple Choice

Jamisa picks 8 pounds of apples. What is the weight of Jamisa's apples in ounces?

• 128 ounces

• 144 ounces

• 96 ounces

• 72 ounces

Multiple Choice

Mrs. Jones is 5 feet 4 inches tall. How tall is she in inches?

• 70 inches

• 60 inches

• 48 inches

• 64 inches

Multiple Choice

You have 50 millimeters and you need meters. How many meters do you have?

• 0.05

• 0.5

• 500

• 5000

Percent Proportions

• Always Part to whole

• You need to know that a whole percent is 100%- NEVER given in story

• Set up proportion with LABELS - ALWAYS

• Remember the part percent REPRESENTS the same thing as the part.

Multiple Choice

Martin's class has 28 students in it. 25% of those students are home sick today. How many students are home sick?

• 7

• 11

• 4

• 13

Multiple Choice

There are 35 boys out for football. This is about 5% of the total enrollment. How many total kids are in the school?

• 350

• 700

• 1235

• 30

Multiple Choice

Carlos took a science test and got 36 correct and 4 incorrect answers. What was the percentage of correct answers?

• 86%

• 94%

• 83%

• 90%

Multiple Choice

The Williams family bought four concert tickets for $252. What was the price per ticket?

• $60.00

• $63.00

• $62.00

• $6.30