Math on the Mind 10.75¢/oz. 425 yards Solve.

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Presentation transcript:

Math on the Mind 10.75¢/oz. 425 yards Solve. Find the unit rate of a 12-oz bottle of orange juice that sells for $1.29. A building is 1,275 feet tall. How many yards tall is this building? 10.75¢/oz. 425 yards

Dimensional Analysis Unit 4, Lesson 10

Conversion Factors A conversion factor is a ratio of equivalent measurements.

Example Problem: A roll of Christmas gift wrap contains 2.5 meters of paper. What is the length of the paper in yards? http://www2.franciscan.edu/academic/mathsci/mathscienceintegation/MathScienceIntegation-620.htm

Example Problem: A roll of Christmas gift wrap contains 2.5 meters of paper. What is the length of the paper in yards? Step 1: Find the conversion factor that gives a ratio between meters and yards. Conversion factor 1 meter = 1.09 yards http://www2.franciscan.edu/academic/mathsci/mathscienceintegation/MathScienceIntegation-620.htm

Example Problem: A roll of Christmas gift wrap contains 2.5 meters of paper. What is the length of the paper in yards? Step 2: Write the conversion factor as a fraction with the unit you want to convert to on top and set the problem up as a proportion. 2.5 meters x 1.09 yards = 1 meter 2.725 yards http://www2.franciscan.edu/academic/mathsci/mathscienceintegation/MathScienceIntegation-620.htm

Using Conversion Factors

Practice:

Practice:

Example: The fastest recorded speed for an eastern gray kangaroo is 40 mi per hour. What is the kangaroo’s speed in feet per second? 40 mi 1 h 5280 ft 1 mi 60 min 1 min 60 s • = 58.6 ft/s The kangaroo’s speed is about 58.7 ft/s.

Customary Units http://www.brainpop.com/math/numbersandoperations/customaryunits/preview.weml http://www.hillsboroschools.net/team6a/connor/math/Ch3%20--%20Decimals%20and%20Metrics/MeasurementPics/units_of_measure.gif