Problem: How many feet are there in 78 inches? Solution:

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Presentation transcript:

Problem: How many feet are there in 78 inches? Solution: Dimensional Analysis: Using fractional conversion factors and unit cancellation to help solve problems Conversion Factor: Equalities written as fractions Example: 1 foot = 12 inches Can be written as two possible conversion factors (fractions) or Problem: How many feet are there in 78 inches? Solution: Write the number and unit given in the problem over 1 Choose the correct conversion factor that will allow you to cancel out the original unit and end up with the desired unit. In this case, we would like to cancel inches, and end up in feet. = = 6.5 feet x