Convert Units Using Conversion Factor

What is a conversion factor?

• Rates that have the same unit rate

  6 miles in 3 hours and 4 miles in 2 hours

• Two ratios that describe the same relationship

  2 : 3 and 4 : 6

• A rate that equals 1; A conversion factor is used to convert units.

  1 mile = 5280 feet

• A decimal system of measurement, based on powers of 10, that contains units for length, capacity, and mass

  centimeter, meter, liter, kilogram

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CCSS.5.MD.A.1

The process of multiplying by ratios of 1 (conversion factors) and cancelling units to convert from one measure to another.

• unit analysis

• conversion factors

• ratio tables

• equivalent ratios

How many inches are in 1 mile?

• 66330in

• 63360in

• 63660in

• 63066in

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CCSS.4.MD.A.1

In order to convert from \(\frac{km}{h}\) to \(\frac{m}{s}\), which of the following conversion factors can be used as one step of the conversion?

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CCSS.2.MD.A.2

What conversion factor would be used to convert 3.2 km into miles?

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CCSS.2.MD.A.2

What conversion factor would be used to convert 12 feet into inches?

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CCSS.2.MD.A.2

What conversion factor would be used to convert 12 feet into inches?

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CCSS.2.MD.A.2

What conversion factor would be used to convert 3.2 km into miles?

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CCSS.2.MD.A.2

In order to convert from \(\frac{km}{h}\) to \(\frac{m}{s}\), which of the following conversion factors can be used as one step of the conversion?

A multiplier used to convert one measurement to an equivalent measurement in different units.

• rate

• unit rate

• conversion factor

• ratio

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