Mathematics
Grade 5
15 min
Compare and convert customary unit of volume
Compare and convert customary unit of volume
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Introduction & Learning Objectives
Learning Objectives
Identify the customary units of volume: fluid ounce, cup, pint, quart, and gallon.
Recall the relationships between different customary units of volume (e.g., 1 gallon = 4 quarts).
Convert larger customary units of volume to smaller customary units of volume.
Convert smaller customary units of volume to larger customary units of volume.
Compare two volumes expressed in different customary units by first converting them to the same unit.
Solve real-world problems involving the conversion of customary units of volume.
Ever wonder how much milk is in a carton or how much water fills a swimming pool? 🥛💧
In this lesson, you'll learn about the different ways we measure liquids in the United States, like cups and gallons. You'll discover how to chan...
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Key Concepts & Vocabulary
TermDefinitionExample
VolumeThe amount of space a liquid or substance occupies.The volume of juice in a bottle is 2 liters, or the volume of air in a balloon.
Customary Units of VolumeThe standard units for measuring liquid capacity used in the United States.Fluid ounces, cups, pints, quarts, and gallons are all customary units of volume.
Fluid Ounce (fl oz)The smallest customary unit of liquid volume. It measures the amount of liquid, not weight.A small shot glass might hold 1 to 2 fluid ounces of liquid.
Cup (c)A common customary unit of liquid volume, larger than a fluid ounce.A standard coffee mug or a measuring cup for baking usually holds 1 cup.
Pint (pt)A customary unit of liquid volume, larger than a cup.A small carton of milk or a container of ice cream is often 1 pint.
Quart (qt...
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Core Formulas
Fluid Ounces to Cups Conversion
$$1 \text{ cup} = 8 \text{ fl oz}$$
To convert cups to fluid ounces, multiply by 8. To convert fluid ounces to cups, divide by 8.
Cups to Pints Conversion
$$1 \text{ pint} = 2 \text{ cups}$$
To convert pints to cups, multiply by 2. To convert cups to pints, divide by 2.
Pints to Quarts Conversion
$$1 \text{ quart} = 2 \text{ pints}$$
To convert quarts to pints, multiply by 2. To convert pints to quarts, divide by 2.
Quarts to Gallons Conversion
$$1 \text{ gallon} = 4 \text{ quarts}$$
To convert gallons to quarts, multiply by 4. To convert quarts to gallons, divide by 4.
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Challenging
A punch recipe calls for 1 gallon of seltzer, 2 quarts of cranberry juice, and 3 pints of orange juice. If the punch is poured into 1-cup servings, how many full servings can be made?
A.13 servings
B.30 servings
C.24 servings
D.38 servings
Challenging
Arrange these volumes from least to greatest: (1) 9 pints, (2) 1 gallon, (3) 19 cups, (4) 5 quarts.
A.1, 2, 3, 4
B.2, 1, 4, 3
C.2, 3, 1, 4
D.3, 1, 2, 4
Challenging
A fish tank holds 12 gallons of water. If it is currently 3/4 full, how many quarts of water are in the tank?
A.9 quarts
B.48 quarts
C.36 quarts
D.16 quarts
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