Unit 3, Lesson 16
Finding the Percentage (Optional)
Grade 6
Practice
Problem 1
A sign in front of a roller coaster says "You must be 40 inches tall to ride." What percentage of this height is:
- 34 inches?
- 54 inches?
to access Practice Problem Solutions.
Problem 2
At a hardware store, a tool set normally costs \$80. During a sale, there is a \$12 discount on the tool set. What percentage of the usual price is the discount? Explain or show your reasoning.
to access Practice Problem Solutions.
Problem 3
A bathtub can hold 80 gallons of water. The faucet flows at a rate of 4 gallons per minute. What percentage of the tub will be filled after 6 minutes?
to access Practice Problem Solutions.
Problem 4
The sale price of every item in a store is 85% of its usual price.
Here are the usual prices of some items. Calculate the sale price of each.
- backpack: \$30
- sweatshirt: \$18
- soccer ball: \$26
to access Practice Problem Solutions.
Problem 5
Clare and Elena were helping a teacher prepare packets of materials for a science project. Clare prepared 8 packets in 20 minutes. Elena prepared 12 packets in 27 minutes.
Who was working at a faster rate? Explain your reasoning.
to access Practice Problem Solutions.
Problem 6
Elena is 56 inches tall.
-
What is her height in centimeters? (Note: 100 inches = 254 centimeters)
-
What is her height in meters?
to access Practice Problem Solutions.