Expand by expressing powers of 10 in the exponential form:

            (i) 172      (ii) 5,643    (iii) 56,439    (iv) 1,76,428

Answers (1)

(i) 172  

172=100+70+2

         =100+(7\times 10)+2

         =1\times 10^2+(7\times 10^1)+2\times 10^0   

(ii) 5,643     

    5643=5000+600+40+3

              =5\times 1000+6\times 100+4\times 10+3

             =5\times 10^3+6\times 10^2+4\times 10^1+3\times 10^0

(iii) 56,439   

   56439=50000+6000+400+30+9

            =5\times 10000+6\times 1000+4\times 100+3\times 10+9

           =5\times 10^4+6\times 10^3+4\times 10^2+3\times 10^1+9\times 10^0

(iv) 1,76,428

    176428=100000+70000+6000+400+20+8

                  =1\times 100000+7\times 10000+6\times 1000+4\times 100+2\times 10+8

 =1\times 10^5+7\times 10^4+6\times 10^3+4\times 10^2+2\times 10^1+8\times 10^0

 

 

 

 

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