Rate By, Mrs. Muller.

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Presentation transcript:

Rate By, Mrs. Muller

Key Vocabulary Ratio: A comparison of two quantities by division. Rate: a ratio that compares two quantities measured in different units, such as miles to gallons or feet to seconds. Unit Rate: is the rate for one unit of a given quantity

Examples of Unit Rate Gas prices Price per ounce Speed limit Price per unit Inches to feet

How to find the Unit Rate The ratio is written as a fraction would appear. For it to be the unit rate it has to be per one unit given (meaning the denominator would be one). Divide the numerator by the denominator in order to find the unit rate.

Example A water pump moves 330 gal of water in 22 minutes. Find the unit rate of gallons per minute. gal gal min min

Using it to find the Unknown I am driving 65 miles/hour. I am 130 miles from my next exit. How long will it take me to get there? m m hr m m hr m m hr

Example Five buses leave on a field trip. There are about 45 students per bus. About how many students are on the 5 buses? Students Bus Bus Students Bus Bus Students Bus Students Bus Bus Bus