MAIN IDEA
Change units in the customary system.
New Vocabulary
unit ratio
Math Online
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• Extra Examples • Personal Tutor
• Self-Check Quiz
Key Concept
Customary Units
Type of Measure
Smaller Unit
Length
Weight
8 fluid ounces (fl oz)
怀孕可以吃芹菜不1 quart (qt) =
2 pints 1 gallon (gal)
= 4 quarts情有独钟
鲶鱼怎么钓6-4
Animal Weight (T)
德育原则Grizzly Bear 1White Rhinoceros 4Hippopotamus 5 1.Tons 145怎么练好字
稀硫酸和铜
8
Pounds
2,000
8,000
Measurement: Changing Customary Units
Convert Smaller Units to Larger Units
3 Convert 15 quarts into gallons.
rate, a unit ratio is one in which the denominator is 1 unit.
Convert Larger Units to Smaller Units
1 Convert 20 feet into inches.
2 Multiplying by 1
婚姻习俗Although the number and最小的大洋
units changed in Example 1, becau the measure is multiplied by 1, the value of the converted measure is the same as the original.
4
Convert Rates
5HELICOPTERS A helicopter flies at a rate of 158 miles per hour.
How many miles per cond is this?
Real-World Link
Complete. 10. 13. 16. 19.Exercis For
10–21
22–23
24–25
26–27See Examples
1–4245HOMEWORK H E L P
R ec ip e:2 2 1/41/3 cu 4 cu Ci tru s P un ch D rin k
See pages 682, 709.
EXTRA
P R C T IC E
A 37.H.O.T. Problems
38.MATH W R IT IN G
I N measures to convert 5 square feet to square inches. Justify your
