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Question

Fill in the blanks:

(i) 4×79=79×  ___

(ii) 511×38=38× ___

(iii) 12×(34+512)=12× ____ +(×)512

(iv) 45×57×___ =(45×57)×89


Solution

(i) 4×79=79× ___

 4×79=79×4 [Since, commutative property]

(ii) 511×38=38× ___

511×38=38×511 [Since, commutative property]

(iii) 12×(34+512)=12× ____ +(×)512

12×(34+512)=12×34+12×512 [Since, Distributive property]

(iv) 45×57×___ =(45×57)×89

45×(57×89)=(45×57)×89 [Since, Associative property]


Mathematics
RD Sharma
Standard VIII

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