Customary and Metric 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.)

One quart is equal to 2 pints.1 qt = 2 pt

1tall glass of lemonade = 1 pint

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.

Three teaspoon is one tablespoon.3 tsp = 1 tbsp.

Teaspoon (tsp.)

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.

Metric Units of measurement • The metric units of

measurements are used anywhere outside of the United States – elsewhere in the world.

• The three basic units of the metric system are :– Gram – measures weight– Meter – measures length.– Liter – measures capacity.

Metric Units of Capacity

Gram (g): Measures weight 1000 grams is equal to 1 kilogram.

1000g = 1 kg.

Kilogram (kg.)

One Kilogram is equal to 1000 grams.

1 kg = 1000 g

Milliliter (mL)

1000 milliliters is equal to 1 Liter.

1000mL = 1 L

Liter (L)

One liter is equal to 1000 milliliters.

1 L = 1000 ml

Metric units of Length

Millimeter (mm. ) 1000 millimeters is equal to 1 meter.

1000 mm = 1 m.

Centimeter (cm.)

100 centimeters is equal to 1meter. 100 cm. = 1 m

Decimeter (dm.)

1 decimeter is equal to 10 centimeters. 1 dm. = 10 cm.

Meter (m)

A metric unit of length

Kilometer(km.)

One kilometer equals 1000 meters. 1 km. = 1000 m.

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 :

A unit of time equals 10 years.1 decade = 10 years

1968 1978 1988 1998 2008

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.

Degrees of Celsius (C) : A metric unit of temperature.