Transcript Chapter 9: Geometry and Measurement

Section 9.6
Capacity
Units of capacity are generally used to
measure liquids. The number of gallons of
gasoline needed to fill a gas tank in a car,
the number of cups of water needed in a
bread recipe, and the number of quarts of
milk sold each day at a supermarket are all
examples of using units of capacity.
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U.S. Units of Capacity
8 fluid ounces (fl oz) = 1 cup (c)
2 cups = 1 pint (pt)
2 pints = 1 quart (qt)
4 quarts = 1 gallon (g)
Martin-Gay, Prealgebra, 5ed
Unit Fractions
8 fl oz
1c
2c
=
1c
=1
8 fl oz
1 pt
=
=1
1 pt 2 c
2 pt 1 qt
=
=1
1 qt 2 pt
4 qt 1 gal
=
=1
1 gal 4 qt
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Capacity: Metric System of
Measurement
The liter is the basic unit of capacity in the
metric system. A liter is the capacity or
volume of a cube measuring 10 centimeters
on each side.
10 cm
10 cm
10 cm
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The prefixes for metric units of capacity are
the same as for metric units of length and
mass.
Metric System of Measurement
Prefix Meaning
kilo
1000
hecto
100
deka
10
deci
centi
milli
1/10
1/100
1/1000
Metric Unit of Length
1 kiloliter (kl) = 1000 liters (L)
1 hectoliter (hl) = 100 L
1 dekaliter (dal) = 10 L
1 liter (L) = 1 L
1 deciliter (dl) = 1/10 or 0.1 L
1 centiliter (cl) = 1/100 or 0.01 L
1 milliliter (ml) = 1/1000 or 0.001 L
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The two most commonly used units of
capacity in the metric system are the
milliliter and the liter.
As with length and mass, all units of capacity are
powers of 10 of the liter, so converting from one unit
of capacity to another only involves moving the
decimal point.
End
Start
kl
hl
dal
L
dl
cl
ml
3 units to the left
Using the listing of units of capacity, convert 5350
ml to liters.
5350 ml = 5.350 L
3 places to the left
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