Basic Mathematics for College Students

(Nandana) #1
Evaluate each expression.See Example 6.















Evaluate each expression.See Example 7.















Evaluate each expression.See Example 8.
43.
44.
45.
46.

Evaluate each expression.See Example 9.















Find the mean (average) of each list of numbers.See
Example 10.



























TRY IT YOURSELF
Evaluate each expression.

































69.
70.





































(4^3 2) 7


5(24) 7


(53)^2  2


42 (82)


2 3(0) 5(0) 8


161 8[6(6) 62 ] 22 (5)


190 2[10^2 (5 22 )] 45


150 2(2 6 4)^2760 2(2 3 4)^2


25  5  5 6  2  3


20  10  5 80  5  4


8  103  0  102  7  101  4


5  103  2  102  3  101  9


18  12


61  55


10  5


52  47


(74)^2  1 (95)^3  8


7  4  5 10  2  2


2  34 33  5


(86)^2 (43)^2 (21)^2 (32)^2


5, 8, 7, 0, 3, 1 9, 3, 4, 11, 14, 1


19, 15, 17, 13 11, 14, 12, 11


3, 5, 9, 1, 7, 5 8, 7, 7, 2, 4, 8


6, 9, 4, 3, 8 7, 1, 8, 2, 2


6(31) 26


4(2^3 )


25(8) 8


6(2^3 )


4(34) 1


5(3^2 )


2(50) 4


2(4^2 )


81 3[8^2 7(135)]


81 9[7^2 7(114)]


53 5[6^2 5(81)]


46 3[5^2 4(95)]


77 9(38 4 6) 162 7(47 6 7)


8 4(29 5 3) 33 6(56 9 6)


(35)^3 (52)^3


(46)^2 (34)^2


































































Write an expression to solve each problem and evaluate it.


  1. SHOPPING At the supermarket, Carlos is buying 3
    cases of soda, 4 bags of tortilla chips, and 2 bottles of
    salsa. Each case of soda costs $7, each bag of chips
    costs $4, and each bottle of salsa costs $3. Find the
    total cost of the snacks.

  2. BANKING When a customer deposits cash, a
    teller must complete a currency count on the back of
    the deposit slip. In the illustration, a teller has
    written the number of each type of bill to be
    deposited. What is the total amount of cash being
    deposited?


APPLICATIONS


15 5[12(2^2 4)]


80 2[12(54)]


4[50(3^3  52 )] 6[15(5 22 )]


2 a

12


3


3 a b3(5)

18


3


b2(2)

52  17


6  22


32  22


(32)^2


152 


24


6


162  8(2)(3)


25


5


6(3)4


5(1)^3 (1)^2 2(1) 6


30(1)^2 4(2) 12


(1812)^3  52 (92)^2  33


25 (2 3 1)


2  9  8


(35)^2  2


2(85)


7 a 53 

200


2


60 a 6  b

40


23


b

3  2  34  5 3  23  4  12


42  32 122  52


110 Chapter 1 Whole Numbers


Currency count, for financial use only
x 1's
x 2's
x 5's
x 10's
x 20's
x 50's
x 100's
TOTAL $

24

6

2
1

10
12


  1. DIVING The scores awarded to a diver by seven
    judges as well as the degree of difficulty of his dive
    are shown on the next page. Use the following
    two-step process to calculate the diver’s overall
    score.
    Step 1Throw out the lowest score and the highest
    score.

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