Mathematics
Grade 5
15 min
Compare and convert customary units of volume
Compare and convert customary units of volume
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1
Introduction & Learning Objectives
Learning Objectives
Identify the customary units of volume: fluid ounce, cup, pint, quart, and gallon.
Recall the standard conversion factors between customary units of volume.
Convert larger customary units of volume to smaller customary units of volume using multiplication.
Convert smaller customary units of volume to larger customary units of volume using division.
Compare two volumes expressed in different customary units by first converting them to the same unit.
Solve real-world problems involving the conversion and comparison of customary units of volume.
Have you ever wondered how much milk is in a carton or how much water fills a swimming pool? 🥛💧 Understanding volume helps us measure liquids every day!
In this lesson, you'll learn about the different ways w...
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Key Concepts & Vocabulary
TermDefinitionExample
Customary UnitsThe system of measurement commonly used in the United States, which includes units like inches, pounds, and gallons.A gallon of milk is a customary unit of volume.
VolumeThe amount of space a liquid or substance occupies.The volume of water in a bottle is 16 fluid ounces.
Conversion FactorA ratio used to change one unit of measurement to another, showing how many of one unit are equal to another unit.The conversion factor between gallons and quarts is 4, because 1 gallon = 4 quarts.
Gallon (gal)A large customary unit of volume, often used for milk, paint, or gasoline.A typical milk jug holds 1 gallon.
Quart (qt)A customary unit of volume, equal to one-fourth of a gallon.A carton of orange juice might hold 1 quart.
Pint (pt)A customary unit of volume, e...
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Core Formulas
Gallons to Quarts Conversion
$1 \text{ gallon} = 4 \text{ quarts}$
To convert gallons to quarts, multiply the number of gallons by 4. To convert quarts to gallons, divide the number of quarts by 4.
Quarts to Pints Conversion
$1 \text{ quart} = 2 \text{ pints}$
To convert quarts to pints, multiply the number of quarts by 2. To convert pints to quarts, divide the number of pints by 2.
Pints to Cups Conversion
$1 \text{ pint} = 2 \text{ cups}$
To convert pints to cups, multiply the number of pints by 2. To convert cups to pints, divide the number of cups by 2.
Cups to Fluid Ounces Conversion
$1 \text{ cup} = 8 \text{ fluid ounces}$
To convert cups to fluid ounces, multiply the number of cups by 8. To convert fluid ounces to cups, divide the number of fluid ounce...
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Challenging
A bucket contains 5 gallons of water. You use 1/2 of the water to wash a car and then 3 quarts to water plants. How many pints of water are left?
A.14 pints
B.20 pints
C.10 pints
D.28 pints
Challenging
A store sells juice in two sizes: a 1-quart bottle for $2.00 and a 1-gallon jug for $7.20. Which is the better buy, and what is the price per quart for that option?
A.The 1-quart bottle is cheaper at $2.00 per quart.
B.Both are the same price per quart.
C.The 1-gallon jug is cheaper at $2.00 per quart.
D.The 1-gallon jug is cheaper at $1.80 per quart.
Challenging
A scientist mixes a solution using 2.5 quarts of one chemical, 5 pints of another, and 12 cups of water. What is the total volume of the solution in gallons?
A.1.5 gallons
B.2 gallons
C.2.25 gallons
D.2.5 gallons
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