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

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.

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

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

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

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

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.

Exit Problems Find each unit rate.

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