Rate: a ratio that compares two different kinds of numbers, such as miles per hour (mph) or dollars...

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8.2 RATES Rate: a ratio that compares two different kinds of numbers, such as miles per hour (mph) or dollars per pound Unit Rate: compares the price of an item to its unit measure

Transcript of Rate: a ratio that compares two different kinds of numbers, such as miles per hour (mph) or dollars...

Page 1: Rate: a ratio that compares two different kinds of numbers, such as miles per hour (mph) or dollars per pound Unit Rate: compares the price of an item.

8.2 RATES

Rate: a ratio that compares two different kinds of numbers, such as miles per hour (mph) or dollars per pound

Unit Rate: compares the price of an item to its unit measure

Page 2: Rate: a ratio that compares two different kinds of numbers, such as miles per hour (mph) or dollars per pound Unit Rate: compares the price of an item.

Rate

Miles per hour (mph)

Feet per second

Heartbeats per minute - heart rate

Dollars per hour baby sitting fee

Page 3: Rate: a ratio that compares two different kinds of numbers, such as miles per hour (mph) or dollars per pound Unit Rate: compares the price of an item.

Activity

Count the number of times your heart beats in 10 seconds. (Record results as a fraction)

Ask a partner to count his or her pulse for 15 seconds. (Record results as a fraction)

Whose pulse is faster?

Page 4: Rate: a ratio that compares two different kinds of numbers, such as miles per hour (mph) or dollars per pound Unit Rate: compares the price of an item.

RATEOn a vacation, Linda’s family traveled 495 miles at 55 mph. How long did the trip take?

Formula Rate= Distance Time

55=495T

Page 5: Rate: a ratio that compares two different kinds of numbers, such as miles per hour (mph) or dollars per pound Unit Rate: compares the price of an item.

Rate= Distance Time

1. You rode your bike 2 hours and traveled 24 miles. What is your rate of speed.

2. You rode your bike at a rate of 10 miles per hour for 4 hours. How many miles did you travel?

3. You ride 18 miles and travel at a rate of 12 mph. How long did this take you?

Page 6: Rate: a ratio that compares two different kinds of numbers, such as miles per hour (mph) or dollars per pound Unit Rate: compares the price of an item.

UNIT RATECompares the price of n item to its unit measure

Page 7: Rate: a ratio that compares two different kinds of numbers, such as miles per hour (mph) or dollars per pound Unit Rate: compares the price of an item.

Unit Rate

1. Eggs are on sale for .72 per dozen. How much is each egg?

Per =divide2. You biked 68 miles in 4 days. Find the

unit rate?

3. Which of the following is the better buy: 2 batteries for $1.50 or 6 batteries for $4.80?

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INDEPENDENT ACTIVITY

Complete p. 406 #1-17