<meta http-equiv="refresh" content="1; url=/nojavascript/"> Selection of Appropriate Weight or Capacity Units | CK-12 Foundation
Dismiss
Skip Navigation
You are reading an older version of this FlexBook® textbook: CK-12 Middle School Math Concepts - Grade 6 Go to the latest version.

7.17: Selection of Appropriate Weight or Capacity Units

Created by: CK-12
%
Progress
Practice Selection of Appropriate Weight or Capacity Units
Practice
Progress
%
Practice Now

Have you ever had an after school job?

Jeffrey is helping his father out as his service station. While Jeffrey is too young to work on cars, he is old enough to stock the shelves. As Jeffrey stocks the shelves, he puts the containers of oil on the shelf. There are many different brands.

Which measurement unit would be used to measure oil?

After Jeffrey finishes that task, he begins counting the bags of ice that are stored in the freezer outside the door. He moves them around and is surprised at how heavy ice actually is.

Which measurement unit would Jeffrey use to measure the weight of each bag of ice?

This Concept is all about choosing the best unit of weight or measure. These questions will be addressed in the Concept.

Guidance

Choosing the correct units can make all the difference for a measurement. You would not measure how tall you are in miles. Neither would you measure length of a football field in inches. The same idea applies for weight and volume. When measuring to cook, it could be pretty complicated if you were trying to measure cups of water in ounces. Think of how challenging that would be as you are measuring. To get an idea of the size of the units of weight and volume, take a look at the table below.

This chart is useful as a reference for many of the different ways to measure weight and capacity.

Which unit would you use to measure each of the following items?

Example A

A baby bottle of milk?

Solution: Fluid ounces

Example B

A cord of wood

Solution: Pounds

Example C

Water for a cake?

Solution: Cups

Now back to Jeffrey and the service station. Here is the original problem once again.

Jeffrey is helping his father out as his service station. While Jeffrey is too young to work on cars, he is old enough to stock the shelves. As Jeffrey stocks the shelves, he puts the containers of oil on the shelf. There are many different brands.

Which measurement unit would be used to measure oil?

After Jeffrey finishes that task, he begins counting the bags of ice that are stored in the freezer outside the door. He moves them around and is surprised at how heavy ice actually is.

Which measurement unit would Jeffrey use to measure the weight of each bag of ice?

First, Jeffrey is wondering about how oil would be measured. Jeffrey has heard his father refer to "quarts of oil." Therefore, the bottles or containers of oil would be measured in quarts.

Ice would be measured in pounds. Ounces would be too small a unit. Pounds is the best choice.

Vocabulary

Here are the vocabulary words in this Concept.

Weight
measurement of the heaviness or mass of someone or something
Ounces
the smallest common unit of weight in the customary system, used to measure very small items.
Pounds
the most common unit for measuring weight, most things are measured in pounds.
Tons
the largest common unit for measuring weight-very large items are measured by the ton-for example, a car or truck.
Fluid Ounce
the smallest common unit for measuring liquid capacity. A baby bottle is measured in fluid ounces.
Cup
a common small unit for measuring liquid capacity.
Pint
2 cups is equal to one pint of liquid capacity.
Quart
2 pints is equal to one quart of liquid capacity.
Gallon
the largest common unit of liquid capacity

Guided Practice

Here is one for you to try on your own.

If Darcy is filling up her swimming pool, which unit of capacity would she use to measure the amount of water needed?

Answer

Darcy would use gallons since fluid ounces is used for smaller quantities of water.

Video Review

Here are videos for review.

Khan Academy US Customary and Metric Units

James Sousa Converting Between Units of Volume in the Customary System

James Sousa Converting Between Units of Weight in the Customary System

Practice

Directions: Name the appropriate unit of measure for each item below.

1. The weight of a dog

2. The weight of a camper

3. Soda in a can

4. Two Elephants

5. A television set

6. A baby bottle

7. A jug of milk

8. An automobile

9. The water in a pool

10. A pile of pennies

11. A pallet of wood pellets

12. A rhinocerous

13. A boat

14. An apple

15. Water in an eye dropper

Image Attributions

Description

Difficulty Level:

At Grade

Authors:

Grades:

Date Created:

Oct 29, 2012

Last Modified:

Dec 17, 2014
Files can only be attached to the latest version of Modality

Reviews

Please wait...
Please wait...
Image Detail
Sizes: Medium | Original
 
MAT.MEA.420.L.1

Original text