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# 1.8 Addition and Subtraction of Whole Numbers: Exercise Supplement

Module by: Denny Burzynski, Wade Ellis. E-mail the authors

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## Exercise Supplement

For problems 1-35, find the sums and differences.

### Exercise 1

908 + 29 ¯ 908 + 29 ¯

937

### Exercise 2

529 + 16 ¯ 529 + 16 ¯

### Exercise 3

549 + 16 ¯ 549 + 16 ¯

565

### Exercise 4

726 + 892 ¯ 726 + 892 ¯

### Exercise 5

390 + 169 ¯ 390 + 169 ¯

559

### Exercise 6

166 + 660 ¯ 166 + 660 ¯

### Exercise 7

391 + 951 ¯ 391 + 951 ¯

1,342

### Exercise 8

48 + 36 ¯ 48 + 36 ¯

### Exercise 9

1,103 + 898 ¯ 1,103 + 898 ¯

2,001

### Exercise 10

1,642 + 899 ¯ 1,642 + 899 ¯

### Exercise 11

807 + 1,156 ¯ 807 + 1,156 ¯

1,963

### Exercise 12

80,349 + 2,679 ¯ 80,349 + 2,679 ¯

### Exercise 13

70,070 + 9,386 ¯ 70,070 + 9,386 ¯

79,456

### Exercise 14

90,874 + 2,945 ¯ 90,874 + 2,945 ¯

### Exercise 15

45,292 + 51,661 ¯ 45,292 + 51,661 ¯

96,953

### Exercise 16

1,617 + 54,923 ¯ 1,617 + 54,923 ¯

### Exercise 17

702,607 + 89,217 ¯ 702,607 + 89,217 ¯

791,824

### Exercise 18

6,670,006 + 2,495 ¯ 6,670,006 + 2,495 ¯

### Exercise 19

267 + 8,034 ¯ 267 + 8,034 ¯

8,301

### Exercise 20

7,007 + 11,938 ¯ 7,007 + 11,938 ¯

### Exercise 21

131,294 + 9,087 ¯ 131,294 + 9,087 ¯

140,381

### Exercise 22

5,292 + 161 ¯ 5,292 + 161 ¯

### Exercise 23

17,260 + 58,964 ¯ 17,260 + 58,964 ¯

76,224

### Exercise 24

7,006 - 5,382 ¯ 7,006 - 5,382 ¯

### Exercise 25

7,973 - 3,018 ¯ 7,973 - 3,018 ¯

4,955

### Exercise 26

16,608 - 1,660 ¯ 16,608 - 1,660 ¯

### Exercise 27

209,527 - 23,916 ¯ 209,527 - 23,916 ¯

185,611

### Exercise 28

584 - 226 ¯ 584 - 226 ¯

### Exercise 29

3,313 - 1,075 ¯ 3,313 - 1,075 ¯

2,238

### Exercise 30

458 - 122 ¯ 458 - 122 ¯

### Exercise 31

1,007 + 331 ¯ 1,007 + 331 ¯

1,338

### Exercise 32

16,082 + 2,013 ¯ 16,082 + 2,013 ¯

### Exercise 33

926 - 48 ¯ 926 - 48 ¯

878

### Exercise 34

736 + 5,869 ¯ 736 + 5,869 ¯

### Exercise 35

676,504 - 58,277 ¯ 676,504 - 58,277 ¯

#### Solution

618,227

For problems 36-39, add the numbers.

### Exercise 36

769 795 298 746 ¯ 769 795 298 746 ¯

### Exercise 37

554 184 883 ¯ 554 184 883 ¯

1,621

### Exercise 38

30,188 79,731 16,600 66,085 39,169 95,170 ¯ 30,188 79,731 16,600 66,085 39,169 95,170 ¯

### Exercise 39

2,129 6,190 17,044 30,447 292 41 428,458 ¯ 2,129 6,190 17,044 30,447 292 41 428,458 ¯

#### Solution

484,601

For problems 40-50, combine the numbers as indicated.

### Exercise 40

2, 957 + 9, 006 2, 957 + 9, 006 size 12{2,"957"+9,"006"} {}

### Exercise 41

19,040+81319,040+813 size 12{"19","040"+"813"} {}

19,853

### Exercise 42

350 , 212 + 14 , 533 350 , 212 + 14 , 533 size 12{"350","212"+"14","533"} {}

### Exercise 43

970+702+22+8970+702+22+8 size 12{"970"+"702"+"22"+8} {}

1,702

### Exercise 44

3, 704 + 2, 344 + 429 + 10 , 374 + 74 3, 704 + 2, 344 + 429 + 10 , 374 + 74 size 12{3,"704"+2,"344"+"429"+"10","374"+"74"} {}

### Exercise 45

874+845+295900874+845+295900 size 12{"874"+"845"+"295"-"900"} {}

1,114

### Exercise 46

904 + 910 881 904 + 910 881 size 12{"904"+"910"-"881"} {}

### Exercise 47

521+453334+600521+453334+600 size 12{"521"+"453"-"334"+"600"} {}

1,300

### Exercise 48

892 820 9 892 820 9 size 12{"892"-"820"-9} {}

### Exercise 49

159+4,085918608159+4,085918608 size 12{"159"+4,"085"-"918"-"608"} {}

2,718

### Exercise 50

2, 562 + 8, 754 393 385 910 2, 562 + 8, 754 393 385 910 size 12{2,"562"+8,"754"-"393"-"385"-"910"} {}

For problems 51-63, add and subtract as indicated.

### Exercise 51

Subtract 671 from 8,027.

7,356

### Exercise 52

Subtract 387 from 6,342.

### Exercise 53

Subtract 2,926 from 6,341.

3,415

### Exercise 54

Subtract 4,355 from the sum of 74 and 7,319.

### Exercise 55

Subtract 325 from the sum of 7,188 and 4,964.

11,827

### Exercise 56

Subtract 496 from the difference of 60,321 and 99.

### Exercise 57

Subtract 20,663 from the difference of 523,150 and 95,225.

407,262

### Exercise 58

Add the difference of 843 and 139 to the differ­ence of 4,450 and 839.

### Exercise 59

Add the difference of 997,468 and 292,513 to the difference of 22,140 and 8,617.

718,478

### Exercise 60

Subtract the difference of 8,412 and 576 from the sum of 22,140 and 8,617.

### Exercise 61

Add the sum of 2,273, 3,304, 847, and 16 to the difference of 4,365 and 864.

9,941

### Exercise 62

Add the sum of 19,161, 201, 166,127, and 44 to the difference of the sums of 161, 2,455, and 85, and 21, 26, 48, and 187.

### Exercise 63

Is the sum of 626 and 1,242 the same as the sum of 1,242 and 626? Justify your claim.

#### Solution

626 + 1,242 = 1,242 + 626 = 1,868 626+1,242=1,242+626=1,868

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