1. Ratios, Rates and Percents
Lesson 8
Ratios, Rates and Percents
Rates and Unit Rates

2. Warm-Up Convert each fraction to a decimal. a. b.
Round 2.74 to the nearest hundredth.
Convert to a decimal. Round your answer to the nearest thousandth.

3. Target: Convert rates to unit rates.
Rates and Unit Rates
Target:
Convert rates to unit rates.

4. Vocabulary Rate: A ratio of two numbers that have different units.
Unit Rate: A rate with a denominator of 1.

5. Example 1a Find the unit rate:
Rewrite the fraction with a denominator of 1.
The unit rate is 25 miles per hour.

6. Example 1b Find the unit rate:
Rewrite the fraction with a denominator of 1.
The unit rate is $0.80 per candy bar.

7. Example 2 The United States Mint in Philadelphia produces 2,250
coins every 30 minutes. Find how many coins per minute
the Mint produces.
Write a ratio as a rate.
Rewrite the rate with
a denominator of 1.
The Mint produces 75 coins per minute.

8. Exit Problems
Find each unit rate.

9. Communication Prompt
Describe a situation when you would want to know a unit rate. How would the unit rate be helpful?