Imperial Units of Mass

Measurement

Imperial Units of Mass

Objectives: By the end of this lesson, you should be able to:

• Correctly state the Imperial units of mass

• Accurately convert between Imperial units of Mass

• Solve real world problems

Imperial Units of Mass

• Mass: A measure of how much matter is in an object (how heavy or light).

• Ounce (oz.): The smallest imperial Unit of mass. Commonly used to measure the mass of small items (stack of coins, candy bar, slice of cheese).

• Pound (lb.): Used to measure the mass of large items ( weight of a baby, bag of apples, pair of shoes)

• Stone: Used to measure the mass of very large items ( car, gorilla, furniture).

Conversion of Units

• When converting between units: You first need to know how much of the smaller unit makes one for the larger unit

• Ounce is the smallest unit of mass. 16 ounces = 1 pound. 224 ounces = 1 stone

• when converting from ounce to pounds; you divide by 16

• when converting from pound to ounces; you multiply by 16

Conversion of Units

• When converting between units: You first need to know how much of the smaller unit makes one for the larger unit

• 14 pound = 1 stone

• when converting from pounds to stone; you divide by 14

• when converting from stone to pounds; you multiply by 14