Customary
Measurements
is another system of measurement used in the United States to describe
how long, how heavy, or how big something is. 
inch (in.) 
12
inches (in) = 1 foot (ft) 
An inch is about
the length from the tip of the thumb to the first knuckle.


foot (ft) 
3 feet = 1 yard (yd) 
A foot is about
the length of a piece of paper. 

yard (yd) 
36 inches (in) = 1 yard (yd) 
A yard is about
the length of a baseball bat. 

mile (mi) 
5280 feet = 1 mile (mi) 
A
mile is about the distance a person can walk in 20 minutes. 

Metric
Measurements
is another system of measurement used to describe an object's
length, mass, or volume. 
Kilometer
(km) 
1
km = 1,000 m 
A
kilometer is about the length of 100 school buses lined up
end to end. 

Meter
(m) 
1
m = 100 cm 
A
meter is about half the height of a door. 

Decimeter
(dm) 
1
dm = 10 cm 
A
decimeter is about the width of your teacher's hand. 

Centimeter
(cm) 
1
cm = 10 mm 
A
centimeter is about the width of a pencil. 
