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Question

Fill in the blanks.

(i) (317)+(125)=(125)+(.....)

(ii) 9+218=(......)+(9)

(iii) (813+37)+(134)=(......)+[37+(134)]

(iv) 12+(712+911)=(12+712)+(.....)

(v) 195+(311+78)={195+(.....)}+78

(vi) 167+.....=......+167=167

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Solution

(i) (317)+(125)=(125)+(317)
(By commutative Law of addition)
(ii) (9)+(218)+(218)+(9)
(By commutative Law of addition)
(iii) (813+37)+(134)=(813)+[37+(134)]
(By Associative Law of addition)
(iv) 12+(712+911)=(12+712)+(911)
(By Associative Law of addition)
(v) 195+(311+78)={195+311}+78
(By Associative Law of addition)
(vi) 167+0=0+167=167
[Existance of Additive Identity (0)]


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