Unit 3 Review - Rates, Ratios, Percents

In the school cafeteria, 3 out of every 5 students buy a sandwich for lunch. Which represents the ratio of students that buy a sandwich to students that do not buy a sandwich.

• 2/5

• 3/5

• 3:2

• 3:8

Answer explanation

Question asked for the ratio of students that buy to those that don't buy. 5 represents the total students overall.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

There are 12 red marbles in a bag. The ratio of the total number of marbles in the bag to the number of red marbles in the bag is 5:2. How many marbles are in the bag?

• 25

• 30

• 60

• 84

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.3

Consider the squares and circles shown.

Which describes a ratio for these shapes?

Check all that apply.

• The ratio of squares to circles is 1:2.

• The ratio of circles to total shapes is 1:3.

• The ratio of squares to total shapes is 3 to 2.

• The ratio of circles to squares is ½.

• The ratio of total shapes to circles is 3/2.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Kendra is making her homemade muffin recipe. She uses a certain amount of flour to produce the number of muffins shown in the table.

Which ratio is equivalent to the number of cups of flour to the number of dozens of muffins produced?

• 3/9

• 11/33

• 40/15

• 63/21

Tags

CCSS.6.RP.A.3A

The table shows the relationship between the number of cans of water and the number of cans of crushed tomatoes in Michael’s family recipe for pasta sauce.

Which table contains equivalent ratios?

• 
• 
• 
• 

Answer explanation

Check to see what the multiplication factor is between the original ratio and the others. Multiply the top and bottom by the same value.

Tags

CCSS.6.RP.A.3A

Davion earns $66.00 for babysitting for 5.5 hours. What is his hourly rate of pay?

• $8.33

• $11.00

• $12.00

• $12.73

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

The table shows the cost of paper towels at four local stores.

Which store has the least expensive price for paper towels?

• Store A

• Store B

• Store C

• Store D

Tags

CCSS.6.RP.A.3B

Which situation leads to a unit cost of $6 per football ticket?

• $6.00 for 2 tickets

• $6.00 for 6 tickets

• 6 tickets for $24

• 12 tickets for $72

Tags

CCSS.6.RP.A.3B

What is the average speed of a train that travels 240 miles in 3 hours?

• 80 mph

• 125 mph

• 237 mph

• 243 mph

Answer explanation

Divide miles by hours to find the unit rate.

Tags

CCSS.6.RP.A.3B

Chelsea and her friends ate 12 out of 16 apples they purchased. What is the percentage of apples they ate?

• 7.5%

• 8%

• 75%

• 80%

Answer explanation

Divide to find the decimal, then multiply by 100. Be careful of your decimal placement.

Tags

CCSS.7.RP.A.3