Measurement
Ounces/Pounds
Lesson
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The customary system is a system of measurement used in the United States to describe how long, how heavy, or how big something is. 

 

Ounce and pound are units for measuring weight. 

 

Weight:

16 ounces (oz.) = 1 pound (lb.)
 

 

Conversions

The chart above shows the relationships between ounces and pounds. You can use the chart to change a measurement from ounces to pounds or from pounds to ounces.
Bob's kitten weighs 3 pounds.  How many ounces is this? To change from a larger unit of length to a smaller unit of length, multiply.
3 lbs. =  ounces Since, 1 lb. = 16 oz.
3 x 16 = 48 So, 3 lbs. = 48 oz.
Ben's guinea pig weighs 32 oz.  How many pounds is this? To change from a smaller unit of length to a larger unit of length, divide.
32 oz. = lbs. Since, 16 oz. = 1 lb.
32    16   =   2 So, 32 oz. = 2 lbs.


  Remember:

 The customary system can describe an object's length,
 weight
, or volume.

Click on the scale for practice.

 
Topic Index | Grade 3 Math | Elementary Test Prep | StudyZone

Created by Carol Carroll
Updated by Pat Delia
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