Calculator Explorations Adding Numbers

To add numbers on a calculator, ﬁnd the keys marked

and or .

For example, to add 5 and 7 on a calculator, press the keys

or .

The display will read . Thus,

To add 687, 981, and 49 on a calculator, press the keys

or .

The display will read .

Thus, (Although entering 687,

for example, requires pressing more than one key, here numbers are grouped together for easier reading.)

687 + 981 + 49 = 1717.

1717

ENTER 49 =

981 + 687 +

5 + 7 = 12.

12 ENTER 7 =

5 +

ENTER

= +

Use a calculator to add.

1. 2.

3. 4.

5. 6. 465

9888 620 + 1550 985

1210 562 + 77

8773 + 652 285 + 55

76 + 97 89 + 45

Vocabulary and Readiness Check

Use the choices below to ﬁll in each blank. Some choices may be used more than once.

sum order addend associative

perimeter number grouping commutative

1. The sum of 0 and any number is the same . 2. The sum of any number and 0 is the same .

3. In , the number 55 is called the and 35 and 20 are each called a(n) . 4. The distance around a polygon is called its .

5. Since , we say that changing the in addition does not change the sum.

This property is called the property of addition.

6. Since , we say that changing the in addition does not change the sum. This property is called the property of addition.

Objective Add. See Examples 1 through 4.

1.3 Exercise Set

1. 14

S E C T I O N 1 . 3 I ADDING WHOLE NUMBERS AND PERIMETER

23

Objective Find the perimeter of each ﬁgure. See Examples 5 and 6.

41. 42.

10 feet 5 centimeters 4 centimeters

3 centimeters

Square 23 centimeters

23 centimeters

Square

49. 50.

24

C H A P T E R 1 I THE WHOLE NUMBERS

51. 52.

3 inches

5 inches 1 inch

7 inches 5 inches

8 inches 6 inches

5 inches

3 inches 7 inches 7 inches

5 inches

4 inches

12 meters 10 meters

5 meters 5 meters

4 feet

5 feet

? 8 feet

3 feet

53. Find the sum of 297 and 1796. 54. Find the sum of 802 and 6487.

55. Find the total of 76, 39, 8, 17, and 126. 56. Find the total of 89, 45, 2, 19, and 341.

57. What is 452 increased by 92? 58. What is 712 increased by 38?

59. What is 2686 plus 686 plus 80? 60. What is 3565 plus 565 plus 70?

61. The population of Florida is 19,308 thousand in 2010. It is projected to increase by 3170 thousand during the next ten years. What is Florida’s projected population in 2020?

62. The population of California is 39,136 thousand in 2010. It is projected to increase by 4990 thousand during the next ten years. What is California’s projected population in 2020?

63. The highest point in South Carolina is Sassafras Mountain at 3560 feet above sea level. The highest point in North Carolina is Mt. Mitchell, whose peak is 3124 feet increased by the height of Sassafras Mountain. Find the height of Mt. Mitchell.

(Source: U.S. Geological Survey)

64. The distance from Kansas City, Kansas, to Hays, Kansas, is 285 miles. Colby, Kansas, is 98 miles farther from Kansas City than Hays. Find the total distance from Kansas City to Colby.

Objectives Mixed Practice—Translating Solve. See Examples 1 through 8.

66. A homeowner is considering installing gutters around her home. Find the perimeter of her rectangular home.

S E C T I O N 1 . 3 I ADDING WHOLE NUMBERS AND PERIMETER

25

102 feet 78 feet

90 feet 70 feet

60 feet 45 feet

1500

Height (in feet)

Highest U.S. Waterfalls

1000

500

Upper Yosemite

Falls 1430

Cascades 675

Lower Yosemite

Falls 320

Oral Intravenous Blood

240 500 500

100 200

355

70. Hank Aaron holds Major League Baseball’s record for the most runs batted in over his career. He batted in 1305 runs from 1954 to 1965. He batted in another 992 runs from 1966 until he retired in 1976.

How many total runs did Hank Aaron bat in during his career in professional baseball?

65. Leo Callier is installing an invisible fence in his backyard. How many feet of wiring are needed to enclose the yard below?

67. The highest waterfall in the United States is Yosemite Falls in Yosemite National Park in California. Yosemite Falls is made up of three sections, as shown in the graph. What is the total height of Yosemite Falls? (Source: U.S. Department of the Interior)

68. Jordan White, a nurse at Mercy Hospital, is recording ﬂuid intake on a patient’s medical chart.

During his shift, the patient had the following types and amounts of intake measured in cubic

centimeters (cc). What amount should Jordan record as the total ﬂuid intake for this patient?

69. In 2008, Harley-Davidson sold 235,441 of its motorcycles domestically. In addition, 78,328 Harley-Davidson motorcycles were sold internationally. What was the total number of Harley-Davidson motorcycles sold in 2008?

(Source: Harley-Davidson, Inc.)

26

C H A P T E R 1 I THE WHOLE NUMBERS

12 in.

18 in.

31 ft

The Top States for Target Stores in 2009

State Number of Stores

Pennsylvania 53

California 236

Florida 124

Georgia 56

Illinois 85

New York 62

Michigan 60

Minnesota 73

Ohio 64

Texas 146

(Source: Target Corporation)

71. During one month in a recent year, the two top-selling automobiles in the United States were the Honda Accord and the Toyota Camry. There were 41,382 Accords and 44,064 Camrys sold that month.

What was the total number of Accords and Camrys sold in that month? (Source: Toyota Corp. and Honda Corp.)

72. In a recent year, the country of New Zealand had 29,719,969 more sheep than people. If the human population of New Zealand in 2008 was 4,280,031, what was the sheep population? (Source: Statistics:

New Zealand)

73. The largest permanent Monopoly board is made of granite and located in San Jose, California. Find the perimeter of the square playing board.

74. The smallest commercially available jigsaw puzzle (with the greatest number of pieces) is a 1000-piece puzzle manufactured in Spain. Find the perimeter of this rectangular-shaped puzzle.

75. In 2008, there were 2677 Gap Inc. (Gap, Banana Republic, Old Navy) stores located in the United States and 493 located outside the United States.

How many Gap Inc. stores were located worldwide?

(Source: Gap Inc.)

76. Wilma Rudolph, who won three gold medals in track and ﬁeld events in the 1960 Summer Olympics, was born in 1940. Tirunesh Dibaba, who won two gold medals in track and ﬁeld events but in the 2008 Summer Olympics, was born 45 years later. In what year was Tirunesh Dibaba born?

The table shows the number of Target stores in ten states. Use this table to answer Exercises 77 through 82.

77. Which state has the most Target stores?

78. Which of the states listed in the table has the fewest Target stores?

79. What is the total number of Target stores located in the three states with the most Target stores?

80. How many Target stores are located in the ten states listed in the table?

81. Which pair of neighboring states has more Target stores combined, Florida and Georgia or Michigan and Ohio?

82. Target operates stores in 49 states. There are 739 Target stores located in the states not listed in the table. How many Target stores are in the United States?

Concept Extensions

S E C T I O N 1 . 3 I ADDING WHOLE NUMBERS AND PERIMETER

27

85. In your own words, explain the commutative property of addition.

86. In your own words, explain the associative property of addition.

87. Give any three whole numbers whose sum is 100. 88. Give any four whole numbers whose sum is 25.

89. Add: 56,468,980 + 1,236,785 + 986,768,000 90. Add: 78,962 + 129,968,350 + 36,462,880

91. 566 932 + 871 2369

92. 773 659 + 481 1913

93. 14 173 86 + 257 520

94. 19 214 49 + 651 923 Check each addition below. If it is incorrect, ﬁnd the correct answer. See the Concept Check in this section.

83. The state of Delaware has 2029 miles of urban highways and 3865 miles of rural highways. Find the total highway mileage in Delaware. (Source: U.S.

Federal Highway Administration)

84. The state of Rhode Island has 5193 miles of urban highways and 1222 miles of rural highways. Find the total highway mileage in Rhode Island. (Source: U.S.

Federal Highway Administration)

1 44

295

In document Basic Math.pdf (Page 44-51)