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Any quantity we measure,( length, mass, volume… ) a number and unit consists of a number and unit If we are given a quantity in one type of unit, and we want another type of unit : We must convert the units We can do this by usingWe can do this by using CONVERSION FACTORS

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THESE FRACTIONS ARE CALLED: CONVERSION FACTORS

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Now, write down CONVERSION FACTORS for: 1.) yard and inch (1 yard = 36 inches) 2.) feet and meters (1 foot = 0.3048 metre) mile and kilometers 3.) mile and kilometers (1 mile = 1.609 km) 4.) pounds and kilograms (2.2 lb = 1kg)

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CONVERSION FACTOR Now, write down CONVERSION FACTORS for: 1.) yard and inch (1 yard = 36 inches) 2.) feet and meters (1 foot = 0.3048 metre) mile and kilometers 3.) mile and kilometers (1 mile = 1.609 km) 4.) pounds and kilograms (2.2 lb = 1kg)

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CONVERSION FACTOR Now, write down CONVERSION FACTORS for: 1.) yard and inch (1 yard = 36 inches) 2.) feet and meters (1 foot = 0.3048 metre) mile and kilometers 3.) mile and kilometers (1 mile = 1.609 km) 4.) pounds and kilograms (2.2 lb = 1kg)

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conversion factors Step 1: Write conversion factors for inches and cm cancel units Step 2: Choose a conversion factor which will allow you to cancel units of a given quantity ( inches in our case) cancel Step 3: Multiply, cancel and check the units EXAMPLE #1 Convert 21.5 inches to cm!

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conversion factors Step 1: Write conversion factors for inches and cm Convert 21.5 inches to cm! cancel units Step 2: Choose a conversion factor which will allow you to cancel units of a given quantity ( inches in our case)

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Convert 21.5 inches to cm! cancel units Step 2: Choose a conversion factor which will allow you to cancel units of a given quantity ( inches in our case) 21.5 inches x

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Convert 21.5 inches to cm! cancel units Step 2: Choose a conversion factor which will allow you to cancel units of a given quantity ( inches in our case) 21.5 inches x cancel and Step 3: Multiply, cancel and check the units 21.5 inches x = 54.61 cm = 54.6 cm

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Chapter 2 Conversion Factors

Chapter 2 Conversion Factors

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