Customary Measurements
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Transcript of Customary Measurements
CUSTOMARY MEASUREMENTSObjective: Students identify and convert customary units of measure.
CUSTOMARY MEASUREMENTS
CHOOSING THE APPROPRIATE CUSTOMARY UNITS
Choose the most appropriate customary unit for each measurement. Justify your answer. A. The length of a rug
Feet-you can use sheets of paper to measure the length
B. The weight of a magazineOunces-the weight of a magazine is about the weight of several slices of bread
C. The capacity of an aquarium Gallons-you can fill an aquarium with gallon jugs of water.
COMMON EQUIVALENT CUSTOMARY UNITS
Length Capacity12 inches (in)= 1 foot
(ft)8 fluid ounces (fl oz) = 1
cup (c)3 feet = 1 yard (yd) 2 c = 1 pint (pt)
5,280 ft = 1 mile (mi) 2 pt = 1 quart (qt)1,760 yds= 1 mi 4 qt = 1 gallon (gal)
Weight16 ounces (oz) = 1 pound (lb)
2,000 lbs = 1 ton
TRY THIS!!!Method 1: ProportionsWrite a proportion
Method 2: Multiply by 1Multiply by a ratio equal to 1 and divide out the units
Convert 19 c to fl oz
fl ozc 1 19
8 x
8 19 1x
152x
19 8191 1c fl ozc
c
19 81fl oz
152 fl oz19 cups is equal to 152 fluid
ounces
TRY THIS!!!A carpenter has a wooden post that is 4 ft long. She cuts off 17 in the end of the post. What is the remaining length?
The carpenter cuts off 17 in.
Write answer in both feet and inches
First convert 4 ft to in
inft
121 4
x
48x Use 1 ft = 12 in
4 17ft in 48 17in in 31in
31in Multiply by ratio equal to 1
112
ftin
3112
ft 7212
ft or 2ft 7in
EXAMPLE 1:Choose the most appropriate customary unit for each measurement. Justify your answer. A. The weight of a car
B. The diameter of a soup can
C. The weight of a newborn baby
EXAMPLE 2:Convert 5,000 pounds to tons.
EXAMPLE 3:Allison orders a 6 oz grilled chicken sandwich. Joseph orders a quarter lb grilled chicken sandwich. Which sandwich weights more? How much more?