Basic Mathematics for College Students

(Nandana) #1
Perform each operation.






















































































  1. Find the difference of and

  2. Find the sum of and

  3. Subtract from

  4. What is the sum of and increased by


5


48


?


7


36


11


24


2


15


.


5


12


7


40


.


9


48


2


45


.


11


60


73


75





31


30


7


30





19


75


8


9





7


12


4


27





1


6


 2 


7


8





3


4


 5


54


53





52


53


37


103





17


103


71


100





1


10


13


20





1


5


49


50





15


16


27


50





5


16


5


6





3


10


9


20





1


30


3


4





2


5





3


10


2


3





4


5





5


6


2


3





1


6


11


12





2


3





17


20





4


5





7


16





1


4





5


8





1


3





7


20





1


5


7


9





1


9





1


9


12


25





1


25





1


25


1


4





2


3


4


5





2


3





1


16


a

15


16


 b

1


12


a

5


12


b

TRY IT YOURSELF



  1. BOTANY To determine the effects of smog on tree
    development, a scientist cut down a pine tree and
    measured the width of the growth rings for the last
    two years.
    a. What was the growth over this two-year
    period?
    b. What is the difference in the widths of the two
    rings?

  2. GARAGE DOOR OPENERS What is the
    difference in strength between a -hp and a -hp
    garage door opener?

  3. MAGAZINE COVERS The page design for the
    magazine cover shown below includes a blank strip
    at the top, called a header, and a blank strip at the
    bottom of the page, called a footer. How much page
    length is lost because of the header and footer?

  4. DELIVERY TRUCKS A truck can safely carry a
    one-ton load. Should it be used to deliver one-half
    ton of sand, one-third ton of gravel, and one-fifth
    ton of cement in one trip to a job site?


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254 Chapter 3 Fractions and Mixed Numbers

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