Unit Rate
Scale Factor
Percents
Better Deal
Proportional Reasoning
100
Which of the following best describes a unit rate?
a.A ratio that compares two quantities that are measured in different units
b.An equation that states that two ratios are equal
c.A comparison that has a denominator of 1
d.Ratios that represent the same part-to-part relationship or the same part-to-whole relationship
c.A comparison that has a denominator of 1
100
What is the unknown quantity?
21,120 feet
100
What is 30% of 80?
24
100
The table below shows the prices at two different stores for ketchup. Which store has the better buy?
Diane's Deli
100
There are 12 gallons of water used after 4 showers. How many showers can happen with 216 gallons of water.
72 showers
200
An 8 pound bag of oranges costs $4.95. Calculate the unit rate. Round to the nearest penny (hundredth)
$0.62
200
Scale the following ratio up or down to determine the unknown quantity. Include units in your answer.
1 gallon
200
Trey bought a surfboard priced at $249.50. There was a 12% sales tax added on. How much was the sales tax?
$29.94
200
The table below shows the prices at two different stores for cereal. Which store has the better buy?
Fran's Foods
200
You purchase a dozen roses for $42. Each rose cost the same amount. How much will you pay for 7 roses at the same price per rose?
$24.50
300
A 14 pack of limes costs $1.12.
What is the unit cost?
a.$0.80
b.$0.90
c.$0.05
d.$0.08
d.$0.08
300
Scale the following ratio up or down to determine the unknown quantity. Include units in your answer.
1 hour
300
Trey bought a surfboard priced at $249.50. There was a 12% sales tax added on. How much was the cost of the surfboard including tax?
$279.44
300
Which of the following has the least cost per ounce?
A. 12 ounces of peanut butter for $1.44
B. 32 ounces of trail mix for $6.80
C. 15 ounces of apples for $1.50
D. 20 ounces of avocados for $3.60
C. 15 ounces of apples for $1.50
300
Josue and Angel are each making snack mix. Josue’s recipe calls for 7 parts pretzels to 3 parts peanuts. Angel’s recipe calls for 6 parts pretzels to 2 parts peanuts. Which recipe has a higher concentration of peanuts? Explain your reasoning.
Josue’s because I scaled up each ratio to find the common denominator, or because I converted both ratios to percents.
400
Teachers earn $540 for working 3 ten-hour shifts at school. What is their hourly wage?
a.$18 per hour
b.$20 per hour
c.$300 per hour
d.$80 per hour
a.$18 per hour
400
The table below shows how much Adamari charges to babysit. How much would Adamari charge for 7 hours?
$45.50
400
Amelia went to dinner with friends. Her bill came to $45.65. She left a 22% gratuity. How much did Amelia pay for dinner including gratuity?
$55.69
400
The table below shows the prices at two different stores for apples. Which store has the better buy?
Diane's Deli
400
There are 4 grape juice boxes in each variety pack of 10 juice boxes. How many are NOT grape juice boxes in a container of 35 juices?
21
500
The table below shows data about the worlds fastest turtles. Which turtle runs the fastest?
The Tortoise
500
Ms. Greene is making arroz con pollo for the teacher potluck. The dish is made of 5 parts rice and 1 part chicken. If she makes 18 cups of arroz con pollo, how many cups of rice does she need for her recipe?
15 cups
500
Gary bought a new pair of skis originally priced at $515. There was a 15% discount and then an 8% sales tax. How much did Gary end up paying for the skis after the discount and tax?
$472.77
500
Box A of green tea contains 8 tea bags and costs $1.12. Box B of green tea contains 18 tea bags and costs $1.98. Which box has the least cost per bag?
Box B
500
Ms. Lagana is making spaghetti. She uses 1½ can of tomato paste for every 3 bowls of spaghetti. She has 3¾ cans of tomato paste in her pantry. How many bowls of spaghetti can she make?
7.5 bowls