Unit Rate and proportional reasoning

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Presentation transcript:

Unit Rate and proportional reasoning

Warm up page 7 Write each ratio in simplest form.

Vocabulary Unit rate pg 8 What is a rate? A rate is a ratio that compare two quantities measured in different units. Suppose you read 233 words in two minutes. Your reading rate is

Unit rate pg 8 What is a unit rate? The rate for one unit of a given quantity. To find a unit rate, divide the first quantity by the second quantity. For your reading rate of , the unit rate is 116.5 words per minute.

Unite rate pg 8 What is a unit price? A unit rate that gives the cost per unit Example: Suppose the box of cereal mentioned earlier weighs 8 oz and has a unit price of $0.31 per ounce. You want to find the total price of the box of cereal. 8 oz $____ 1 oz $0.31

Examples- unit rate pg 8 A Box of cereal contain 8 serving and has a total of 36 grams of fat. Find the unit rate of grams of fat per serving.

Example- unit price pg 8 The unit price for dog food is $0.35/lb. How much is a 20lb bag?

Warm up pg 9 Find the unit rate You earn $33 dollars for 4 hours of work. How much did you make per hour? Sarah drove 203 mi to her cousins house. The drive took her 3 hours and 30 min. What was her average speed in miles per hour?

Check homework

Quiz page 9 under warm up It took Anthony 5 hr 45 min to complete a 25 mi walkathon. What was his average speed in miles per hour? Round your answers to the nearest hundredth. A 20lb bag of dog food cost $21.50. A 30 lb bag of the same dog food cost $32.90. Find each unit price. The determine the better buy.

Review pg 10 IAN Problems 1-38 all page 249