Customary Units of
Measurement
• Customary units of measure are the units
of measure that are used only in the
United States.
• Customary Measurements
• Units of Length.
• Units of Weight.
• Units of Capacity.
• Units of Time.
The Units of Capacity
• Capacity:
It is the amount a container can
hold. Within the customary
system, the common units for
measuring capacity are fluid
ounces, cups, pints, quarts, and
gallons.
Examples: A standard cup of
coffee. A can of coke is 12 fluid
ounces. A gallon of milk.
Fluid Ounce (fl.oz.)
One fluid ounce is equal to 2 tablespoons.
1 fl oz = 2 tbsp.
Gallon
+
+
+
A customary unit of capacity. One
gallon is equal to 4 quarts.
1 gal = 4 qt
Quart (qt.)
1tall glass of
lemonade = 1
pint
One quart is equal to 2 pints.
1 qt = 2 pt
Pint (pt.)
One pint ( approx. a tall glass of
lemonade) is equal to 2 cups.
1 pt. = 2 cups
Tablespoon (tbsp)
One tablespoon is 3 teaspoon.
1 tbsp. = 3 tsp.
Teaspoon (tsp.)
Three teaspoon is one tablespoon.
3 tsp = 1 tbsp.
Units of Length.
• Length :
It is a measure of the length of
an object. The common units
for measuring lenght in the
customary system are inches,
feet, yards, and miles.
Examples: A ruler is a foot.
There are 12 inches in a foot.
A football field is measured in
yards. The distance from here
to Flagstaff is measured in
miles.
Inches
• There are 12 inches in a foot.
• 12 in. = 1 foot.
• 1 ruler = 12 inches/1 foot
Yards
• There are 3 feet in a yard.
• 3 ft. = 1 yd.
• 36 in. = 1 yd.
• Football/soccer fields are measured in yards.
Miles
• There are 1,760 yards in a mile
• 1,760 yd. = 1 mi.
• The distance from here to Flagstaff is measured in miles.
Units of Weight.
• Weight :
It is a measure of the
heaviness of an object.
The common units for
measuring weight in the
customary system are
ounces, pounds, and
tons.
Examples: A loaf of bread
is a pound. A compact
car weighs a ton.
Pound (lb.)
A pound is equal to 16 ounces.
1 lb. = 16 ounces.
1 pound of bread = One 16 ounce Jelly jar.
Ounce (oz.):
16 ounce is one pound .
16 (oz.) = 1 lb.
16 ounce jar = 1 pound cake
Ton (T) :
One ton is equal to 2000 pounds.
1 T = 2000 lbs.
A compact car weighs one ton or 2000 pounds.
The Units of Time
The common units for measuring time in the
customary system are seconds, minutes,
hours, days, weeks, month, and years.
DAY
One day is equal to 24 hours .
1 day = 24 hrs
Hour (hr.)
One hour is equal to 60 minutes.
1 hr. = 60 min.
Minute(min) :
One minute is equal to 60 seconds.
1 min = 60 sec.
Second(sec):
One second is equal to one sixtieth of a minute.
1 sec = 1/60 min.
Week
One week equals seven days.
1 week = 7 days
Month :
One month is one of the 12 parts into
which a year is divided.
Year:
1 year equals 365 days or 52 weeks
or 12 months.
Leap year
A unit of time equal to 366 days.
Decade :
1968
1978
1988
1998
2008
A unit of time equals 10 years.
1 decade = 10 years
Measure of Time
Digital Clock :
Shows time with number. Hours are
separated by a colon.
Analog Clock :
Shows time by pointing to
numbers on a face
Elapsed time :
The amount of time between the
beginning of an event or the end of an
event.
A music lesson started at 9:30 a.m and ended
at 10 :25 a.m What is the elapsed time?
Units of Temperature
Degrees of Fahrenheit (F): A standard unit of
temperature.