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Add 1875 and 358.

1875 + 358 = 2233. Above the tens, hundreds, and thousands columns are carried ones.

5 + 8 = 13 Write 3, carry 1 ten. 1 + 7 + 5 = 13 Write 3, carry 1 hundred. 1 + 8 + 3 = 12 Write 2, carry 1 thousand. 1 + 1 = 2

The sum is 2233.

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Add 89,208 and 4,946.

89,208 + 4,946 = 94,154. Above the tens, thousands, and ten-thousands columns are carried ones.

8 + 6 = 14 Write 4, carry 1 ten. 1 + 0 + 4 = 5 Write the 5 (nothing to carry). 2 + 9 = 11 Write 1, carry one thousand. 1 + 9 + 4 = 14 Write 4, carry one ten thousand. 1 + 8 = 9

The sum is 94,154.

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Add 38 and 95.

38 + 95 = 133. Above the tens and the hundreds columns are carried ones.

8 + 5 = 13 Write 3, carry 1 ten. 1 + 3 + 9 = 13 Write 3, carry 1 hundred. 1 + 0 = 1

As you proceed with the addition, it is a good idea to keep in mind what is actually happening.

38 + 95, which is separated into 3 tens + 8 ones over 9 tens + 5 ones. The sum is 12 tens + 13 ones, which is equal to 12 tens + 1 ten + 3 ones, which simplifies to 13 tens + 3 ones, which is equal to 1 hundred + 3 tens + 3 ones, which equals 133.

The sum is 133.

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Find the sum 2648, 1359, and 861.

2648 + 1359 + 861 = 4868. Above the tens, hundreds, and thousands columns are carried ones.

8 + 9 + 1 = 18 Write 8, carry 1 ten. 1 + 4 + 5 + 6 = 16 Write 6, carry 1 hundred. 1 + 6 + 3 + 8 = 18 Write 8, carry 1 thousand. 1 + 2 + 1 = 4

The sum is 4,868.

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Numbers other than 1 can be carried as illustrated in [link] .

Find the sum of the following numbers.

878016 + 9905 + 38951 + 56817 = 983689. Above the tens column is a carried one. Above the thousands column is a carried 2. Above the ten-thousands column is a carried 3. Above the hundred-thousands column is a carried 1.

6 + 5 + 1 + 7 = 19 Write 9, carry the 1. 1 + 1 + 0 + 5 + 1 = 8 Write 8. 0 + 9 + 9 + 8 = 26 Write 6, carry the 2. 2 + 8 + 9 + 8 + 6 = 33 Write 3, carry the 3. 3 + 7 + 3 + 5 = 18 Write 8, carry the 1. 1 + 8 = 9 Write 9.

The sum is 983,689.

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The number of students enrolled at Riemann College in the years 1984, 1985, 1986, and 1987 was 10,406, 9,289, 10,108, and 11,412, respectively. What was the total number of students en­rolled at Riemann College in the years 1985, 1986, and 1987?

We can determine the total number of students enrolled by adding 9,289, 10,108, and 11,412, the number of students enrolled in the years 1985, 1986, and 1987.

9,289 + 10,108 + 11,412 = 30,809. Above the tens, hundreds, and ten-thousands columns are carried ones.

The total number of students enrolled at Riemann College in the years 1985, 1986, and 1987 was 30,809.

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Practice set b

Perform each addition. For the next three problems, show the expanded form.

Add 58 and 29.

87

Vertical addition.  5 tens + 8 ones, over 2 tens + 9 ones = 7 tens + 17 ones.

= 7 tens + 1 ten + 7 ones = 8 tens + 7 ones = 87

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Add 476 and 85.

561

4 hundreds + 7 tens + 6 ones over 8 tens + 5 ones = 4 hundreds + 15 tens + 11 ones.

= 4 hundreds + 15 tens + 1 ten + 1 one = 4 hundreds + 16 tens + 1 one = 4 hundreds + 1 hundred + 6 tens + 1 one = 5 hundreds + 6 tens + 1 one = 561

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Add 27 and 88.

115

Vertical addition. 2 tens + 7 ones, over 8 tens + 8 ones = 10 tens + 15 ones.

= 10 tens + 1 ten + 5 ones = 11 tens + 5 ones = 1 hundred + 1 ten + 5 ones = 115

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Add 67,898 and 85,627.

153,525

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For the next three problems, find the sums.

847 825   796 ̲

2,468

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16,945 8,472 387,721 21,059            629 ̲

434,826

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Calculators

Calculators provide a very simple and quick way to find sums of whole numbers. For the two problems in Sample Set C, assume the use of a calculator that does not require the use of an ENTER key (such as many Hewlett-Packard calculators).

Sample set c

Use a calculator to find each sum.

34 + 21 size 12{"34"+"21"} {} Display Reads
Type 34 34
Press + 34
Type 21 21
Press = 55

The sum is 55.

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106 + 85 + 322 + 406 size 12{"106"+"85"+"322"+"406"} {} Display Reads
Type 106 106 The calculator keeps a running subtotal
Press + 106
Type 85 85
Press = 191 106 + 85 size 12{"106"+"85"} {}
Type 322 322
Press + 513 191 + 322 size 12{"191"+"322"} {}
Type 406 406
Press = 919 513 + 406 size 12{"513"+"406"} {}

The sum is 919.

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Practice set c

Use a calculator to find the following sums.

62 + 81 + 12 size 12{"62"+"81"+"12"} {}

155

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9, 261 + 8, 543 + 884 + 1, 062 size 12{9,"261"+8,"543"+"884"+1,"062"} {}

19,750

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10 , 221 + 9, 016 + 11 , 445 size 12{"10","221"+0,"016"+"11","445"} {}

30,682

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Exercises

For the following problems, perform the additions. If you can, check each sum with a calculator.

14 + 5 size 12{"14"+5} {}

19

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12 + 7 size 12{"12"+7} {}

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46 + 2 size 12{"46"+2} {}

48

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83 + 16 size 12{"83"+"16"} {}

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77 + 21 size 12{"77"+"21"} {}

98

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552 + 237 size 12{"552"+"237"} {}

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8, 521 + 4, 256 size 12{8,"521"+4,"256"} {}

12,777

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16,515 + 42,223 ̲

58,738

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616 , 702 + 101 , 161 size 12{"616","702"+"101","161"} {}

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43 , 156 , 219 + 2, 013 , 520 size 12{"43","156","219"+2,"013","520"} {}

45,169,739

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17 + 6 size 12{"17"+6} {}

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25 + 8 size 12{"25"+8} {}

33

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36 + 48 size 12{"36"+"48"} {}

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74 + 17 size 12{"74"+"17"} {}

91

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486 + 58 size 12{"486"+"58"} {}

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743 + 66 size 12{"743"+"66"} {}

809

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381 + 88 size 12{"381"+"88"} {}

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1, 428 + 893 size 12{1,"428"+"893"} {}

2,321

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12 , 898 + 11 , 925 size 12{"12","898"+"11","925"} {}

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631,464 + 509,740 ̲

1,141,204

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38,428,106 + 522,936,005 ̲

561,364,111

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5, 288 , 423 , 100 + 16 , 934 , 785 , 995 size 12{5,"288","423","100"+"16","934","785","995"} {}

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98 , 876 , 678 , 521 , 402 + 843 , 425 , 685 , 685 , 658 size 12{"98","876","678","521","402"+"843","425","685","685","658"} {}

942,302,364,207,060

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41 + 61 + 85 + 62 size 12{"41"+"61"+"85"+"62"} {}

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21 + 85 + 104 + 9 + 15 size 12{"21"+"85"+"104"+9+"15"} {}

234

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116 27 110 110 +     8 ̲

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75,206 4,152 + 16,007 ̲

95,365

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8,226 143 92,015 8 487,553       5,218 ̲

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50,006 1,005 100,300 20,008 1,000,009       800,800 ̲

1,972,128

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616 42,018 1,687 225 8,623,418 12,506,508 19 2,121       195,643 ̲

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For the following problems, perform the additions and round to the nearest hundred.

1,468   2,183 ̲

3,700

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928,725      15,685 ̲

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82,006   3,019,528 ̲

3,101,500

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11,172 22,749   12,248 ̲

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240 280 210   310 ̲

1,000

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9,573 101,279   122,581 ̲

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For the next five problems, replace the letter m with the whole number that will make the addition true.

432 +     m ̲ 451

19

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1,893 +       m ̲ 1,981

88

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The number of nursing and related care facilities in the United States in 1971 was 22,004. In 1978, the number was 18,722. What was the total num­ber of facilities for both 1971 and 1978?

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The number of persons on food stamps in 1975, 1979, and 1980 was 19,179,000, 19,309,000, and 22,023,000, respectively. What was the total number of people on food stamps for the years 1975, 1979, and 1980?

60,511,000

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The enrollment in public and nonpublic schools in the years 1965, 1970, 1975, and 1984 was 54,394,000, 59,899,000, 61,063,000, and 55,122,000, respectively. What was the total en­rollment for those years?

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The area of New England is 3,618,770 square miles. The area of the Mountain states is 863,563 square miles. The area of the South Atlantic is 278,926 square miles. The area of the Pacific states is 921,392 square miles. What is the total area of these regions?

5,682,651 square miles

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In 1960, the IRS received 1,188,000 corporate income tax returns. In 1965, 1,490,000 returns were received. In 1970, 1,747,000 returns were received. In 1972 —1977, 1,890,000; 1,981,000; 2,043,000; 2,100,000; 2,159,000; and 2,329,000 re­turns were received, respectively. What was the total number of corporate tax returns received by the IRS during the years 1960, 1965, 1970, 1972 —1977?

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Find the total number of scientists employed in 1974.

A graph entitled employment status of mathematical scientists - 1974. On the graph are histograms with scientific field titles, and a labeled number of the scientists holding the titles. There are 266,000 life scientists, 248,000 physical scientists, 170,000 computer scientists, 217,000 social scientists, 109,000 psychologists, 101,000, mathematicians, and 79,000 environmental scientists.

1,190,000

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Find the total number of sales for space vehicle systems for the years 1965-1980.

A graph entitled sales for space vehicle systems, 1965-1980. The histograms for each year are plotted along the horizontal axis, and net sales along the vertical axis. In ascending succession, the sales were 2,449,000,000, 1,956,000,000, 1,725,000,000, 1,656,000,000, 1,562,000,000, 1,751,000,000, 2,119,000,000, 2,002,000,000, 1,870,000,000, 2,324,000,000, 2,539,000,000, and 3,254,000,000.
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Find the total baseball attendance for the years 1960-1980.

A graph entitled baseball attendance 1960-1980, with the histograms for each year plotted on the horizontal axis, and the attendance on the vertical axis. In ascending succession, the years had the following attendances, 20,261, 22,806, 29,191, 30,373, 41,402, 44,262, and 43,746.

271,564,000

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Find the number of prosecutions of federal officials for 1970-1980.

A graph entitled prosecutions of federal officials 1970-1980, with histograms of the years on the horizontal axis, and number of prosecutions on the vertical axis. The years in ascending succession had the following number of prosecutions, 9, 58, 58, 60, 59, 53, 111, 129, 133, 114, 123.
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For the following problems, try to add the numbers mentally.

5 5 3   7 ̲ alignl { stack { size 12{5} {} #size 12{5} {} # size 12{3} {} #size 12{ {underline {7}} } {} } } {}

20

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8 2 6    4 ̲ alignl { stack { size 12{8} {} #size 12{2} {} # size 12{6} {} #size 12{ {underline {4}} } {} } } {}

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9 1 8 5   2 ̲ alignl { stack { size 12{9} {} #size 12{1} {} # size 12{8} {} #size 12{5} {} # size 12{ {underline {2}} } {}} } {}

25

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5 2 5 8 3   7 ̲ alignl { stack { size 12{5} {} #size 12{2} {} # size 12{5} {} #size 12{8} {} # size 12{3} {} #size 12{ {underline {7}} } {} } } {}

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6 4 3 1 6 7 9   4 ̲ alignl { stack { size 12{6} {} #size 12{4} {} # size 12{3} {} #size 12{1} {} # size 12{6} {} #size 12{7} {} # size 12{9} {} #size 12{ {underline {4}} } {} } } {}

40

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20   30 ̲ alignl { stack { size 12{"20"} {} #size 12{ {underline {"30"}} } {} } } {}

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15   35 ̲ alignl { stack { size 12{"15"} {} #size 12{ {underline {"35"}} } {} } } {}

50

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16   14 ̲ alignl { stack { size 12{"16"} {} #size 12{ {underline {"14"}} } {} } } {}

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23   27 ̲ alignl { stack { size 12{"23"} {} #size 12{ {underline {"27"}} } {} } } {}

50

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82   18 ̲ alignl { stack { size 12{"82"} {} #size 12{ {underline {"18"}} } {} } } {}

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36   14 ̲ alignl { stack { size 12{"36"} {} #size 12{ {underline {"14"}} } {} } } {}

50

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Exercises for review

( [link] ) Each period of numbers has its own name. From right to left, what is the name of the fourth period?

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( [link] ) In the number 610,467, how many thousands are there?

0

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( [link] ) Write 8,840 as you would read it.

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( [link] ) Round 6,842 to the nearest hundred.

6,800

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( [link] ) Round 431,046 to the nearest million.

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Questions & Answers

A golfer on a fairway is 70 m away from the green, which sits below the level of the fairway by 20 m. If the golfer hits the ball at an angle of 40° with an initial speed of 20 m/s, how close to the green does she come?
Aislinn Reply
cm
tijani
what is titration
John Reply
what is physics
Siyaka Reply
A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance
Jude Reply
Can you compute that for me. Ty
Jude
what is the dimension formula of energy?
David Reply
what is viscosity?
David
what is inorganic
emma Reply
what is chemistry
Youesf Reply
what is inorganic
emma
Chemistry is a branch of science that deals with the study of matter,it composition,it structure and the changes it undergoes
Adjei
please, I'm a physics student and I need help in physics
Adjanou
chemistry could also be understood like the sexual attraction/repulsion of the male and female elements. the reaction varies depending on the energy differences of each given gender. + masculine -female.
Pedro
A ball is thrown straight up.it passes a 2.0m high window 7.50 m off the ground on it path up and takes 1.30 s to go past the window.what was the ball initial velocity
Krampah Reply
2. A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (0.20) at constant velocity by a force directed 25° above the horizontal. Calculate (a) the work of the applied force, (b) the work of friction, and (c) the total work.
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you have been hired as an espert witness in a court case involving an automobile accident. the accident involved car A of mass 1500kg which crashed into stationary car B of mass 1100kg. the driver of car A applied his brakes 15 m before he skidded and crashed into car B. after the collision, car A s
Samuel Reply
can someone explain to me, an ignorant high school student, why the trend of the graph doesn't follow the fact that the higher frequency a sound wave is, the more power it is, hence, making me think the phons output would follow this general trend?
Joseph Reply
Nevermind i just realied that the graph is the phons output for a person with normal hearing and not just the phons output of the sound waves power, I should read the entire thing next time
Joseph
Follow up question, does anyone know where I can find a graph that accuretly depicts the actual relative "power" output of sound over its frequency instead of just humans hearing
Joseph
"Generation of electrical energy from sound energy | IEEE Conference Publication | IEEE Xplore" ***ieeexplore.ieee.org/document/7150687?reload=true
Ryan
what's motion
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what are the types of wave
Maurice
answer
Magreth
progressive wave
Magreth
hello friend how are you
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fine, how about you?
Mohammed
hi
Mujahid
A string is 3.00 m long with a mass of 5.00 g. The string is held taut with a tension of 500.00 N applied to the string. A pulse is sent down the string. How long does it take the pulse to travel the 3.00 m of the string?
yasuo Reply
Who can show me the full solution in this problem?
Reofrir Reply
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Source:  OpenStax, Fundamentals of mathematics. OpenStax CNX. Aug 18, 2010 Download for free at http://cnx.org/content/col10615/1.4
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