Practice the questions given in the worksheet on adding integers. We know that the sum of any two integers is always an integer.

(i) + 84 and + 45

(ii) - 63 and - 23

(iii) -44 and + 35

(iv) +12 and -20

(v) + 2245 and -1013

(vi) -260 and 0

(vii) -57 and -476

(viii) 274 and - 342

(ix) + 145 and +264

(x) - 814 and +415

II. Fill in the blanks:

(i) 15 + 27 = ………..

(ii) 27 + 15 = ………..

(iii) 27 + 0 = ………..

(iv) 0 + 15 = ………..

(v) 7 + ……….. = 0

(vi) (-9) + ……….. = 0

(vii)  17 + (-17) = ………..

(viii) (-7) + ……….. = -5

(i) 7 + 9

(ii) (-4) + 9

(iii) 2 + (-2)

(iv) (-7) + (-6)

(v) (-8) + (-4) + (-9)

IV. Evaluate the following:

(i) (+423) + (253)

(ii) (-423) + (+253)

(iii) (+423) + (-253)

(iv) (-423) + (-253)

V. Find the value of the following:

(i) 3 + 4 + (-6) + (-6) + 2

(ii) 11 + 53 + (-40) - 29

(iii) (-98) + (-43) + 69 + 77

(iv) 41 + (-73) + 23  - 85

VI. State whether the following statements are true (T) of false (F).

(i) The sum of two integers can be zero.

(ii) The addition of three distinct integers is zero if one of integer is zero.

(iii) The addition of a negative (-ve) integer and a positive (+ve) integer is always a negative (-ve) integer.

(iv) The addition of an integer and its opposite is zero.

(v) The addition of two negative (-ve) integers is always a positive (+ve) integer.

I. (i) +129

(ii) -86

(iii) -9

(iv) -8

(v) + 1232

(vi) -260

(vii) -533

(viii) -68

(ix) + 409

(x) – 399

II. (i) 42

(ii) 42

(iii) 27

(iv) 15

(v) -7

(vi) 9

(vii)  0

(viii) 2

III. (i) 16

(ii) 5

(iii) 0

(iv) -13

(v) -21

IV. (i) 676

(ii) -170

(iii) 170

(iv) -676

V. (i) -3

(ii) -5

(iii) 5

(iv) -94

VI. (i) T

(ii) F

(iii) F

(iv) T

(v) F

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