Basic Mathematics for College Students

A-33

Answers to Selected Exercises

APPENDIX

V

101. a.

b.

103.1,865,593; 482,880; 1,503; 269; 43,449

105. a.hundred thousands b.980,000,000; 9 hundred
     millions 8 ten millions c.1,000,000,000; one billion

1.addend, addend, sum 3.commutative 5.estimate

7.rectangle, square 9.square 11. a.commutative

property of addition b.associative property of addition

c.associative property of addition d.commutative

property of addition 13. 0 15.plus 17.33 plus 12

equals 45 19.47, 52 21. 38 23. 689 25. 76 27. 876

29. 35 31. 92 33. 70 35. 75 37. 461 39.8,937
    41.18,143 43.1,810 45. 19 47. 33 49. 137 51. 241


30. 30 55. 60 57.1,615 59.1,207 61.37,500
    63.1,020,000 65.88 ft 67.68 in. 69.376 mi
    71.186 cm 73.15,907 75.56,460 77. 65 79. 979
    81.30,000 83. 121 85.11,312 87. 50 89.91 ft
    91.1,140 calories 93.79,787,000 visitors 95.597,876
    97.$28,800 99.$6,645,000,000 101.196 in. 103.384 ft


31. a.3,000  100  20  5 b.60,000  30  7

Study Set Section 1.2 (page 24)

Aug. 12, 2010

DR. ANDERSON 3,433.00

DATE

DOLLARS

4251

Payable to $

Memo

Three thousand four hundred thirty-three and––– 10000

March 9, 2010

Davis Chevrolet 15,601.00

DATE

DOLLARS

7155

Payable to $

Memo

Fifteen thousand six hundred one and––– 10000

25

50

75

100

125

150

175

200

225

U.S. Venezuela Canada

Line graph

Gas reserves (trillion cubic ft)

ArgentinaMexico

1.c 2.b 3.e 4.d 5.a

1.digits 3.standard 5.expanded 7.inequality
9.

11. 
    

    a.forty b.ninety c.sixty-eight d.fifteen

    
    


12. 
    


13. 
    


14. 
    


15. 
    

21.braces 23. a.3 tens b. 7 c.6 hundreds d. 5

25. a.1 hundred million b. 7 c.9 tens d. 4
    27.ninety-three 29.seven hundred thirty-two
    31.one hundred fifty-four thousand, three hundred two
    33.fourteen million, four hundred thirty-two thousand, five
    hundred 35.nine hundred seventy billion, thirty-one
    million, five hundred thousand, one hundred four
    37.eighty-two million, four hundred fifteen 39.3,737


26. 930 43.7,021 45.26,000,432 47. 200  40  5
    49.3,000  600  9 51.70,000 2,000  500  30  3
    53.100,000 4,000  400  1
    55.8,000,000 400,000 3,000  600  10  3
    57.20,000,000 6,000,000  100  50  6


27. a. b. 61. a. b. 63.98,150
    65.512,970 67.8,400 69.32,400 71.66,000
    73.2,581,000 75.53,000; 50,000 77.77,000; 80,000
    79.816,000; 820,000 81.297,000; 300,000 83. a.79,590
    b.79,600 c.80,000 d.80,000 85. a.$419,160
    b.$419,200 c.$419,000 d.$420,000 87.40,025
    89.202,036 91.27,598 93.10,700,506 95.Aisha


28. a.the 1970s, 7 b.the 1960s, 9 c.the 1960s, 12
    d.the 1980s


29. 
    

25

50

75

100

125

150

175

200

U.S. Venezuela Canada

Bar graph

Gas reserves (trillion cubic ft)

ArgentinaMexico

225

0 1 2 3 4 56 789 10

0 1 2 3 4 56 789 10

0 1 2 3 456 7 89 10

0 1 2 3 4 56 789 10

1345872

Hundred trillionsTen trillionsTrillionsTen billionsBillionsTen millionsMillions

,,,, 200946

ThousandsHundredsTensOnes

Hundred billionsHundred millionsHundred thousandsTen thousands

Trillions Billions Millions Thousands Ones

PERIODS

Study Set Section 1.1 (page 10)

Think It Through (page 9)