Measurement Examples And Worksheet - A-64 Appendix 5 Page 7

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A-69
V.1 American Units of Measurement
To perform the conversion, we multiply.
25 lb
25 lb
16 oz
Write 25 lb as a fraction: 25 lb
. Then multiply by a
#
25 lb
1
16 oz
1
1 lb
form of 1:
.
1 lb
25 lb
16 oz
Remove the common units of pounds from the numerator
and denominator. Notice that the units of ounces remain.
1
1 lb
25
#
25
16 oz
Simplify.
16
150
400 oz
Multiply: 25 16
400.
250
25 pounds is equal to 400 ounces.
400
Define American units of capacity.
6
The American system of measurement uses the units of ounce, cup, pint, quart, and
gallon to measure capacity. These units are related as follows.
The Language of Mathematics
The word capacity means the amount that
can be contained. For example, a gas tank might have a capacity of 12 gallons.
American Units of Capacity
1 cup (c)
8 fluid ounces (fl oz)
1 pint (pt)
2 cups
1 quart (qt)
2 pints
1 gallon (gal)
4 quarts
The abbreviation for each unit is written within parentheses.
Convert from one American unit of capacity to another.
7
To convert units of capacity in the American system of measurement, we use the
following unit conversion factors. Each conversion factor shown below is a form of 1.
Use the unit
Use the unit
To convert
conversion
To convert
conversion
from
factor
from
factor
8 fl oz
1 c
cups to ounces
ounces to cups
1 c
8 fl oz
1 pt
2 c
pints to cups
cups to pints
1 pt
2 c
2 pt
1 qt
quarts to pints
pints to quarts
1 qt
2 pt
4 qt
1 gal
gallons to quarts
quarts to gallons
1 gal
4 qt

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