Q.3.    Express the following numbers in standard form:

            (i) 5,00,00,000      (ii) 70,00,000     (iii) 3,18,65,00,000    (iv) 3,90,878     (v) 39087.8     (vi) 3908.78

Answers (1)

(i) 5,00,00,000     

50000000=5\times 10000000=5\times 10^7

 

(ii) 70,00,000

7000000=7\times 1000000=7\times 10^6

 

 (iii) 3,18,65,00,000  

3186500000=31865\times 100000

                         =3.1865\times 10000 \times 100000

                            =3.1865\times 10^9

 

  (iv) 3,90,878

      =3.90878\times 100000

     =3.90878\times 10^5

   

(v) 39087.8    

          =3.90878\times 10000

            =3.90878\times 10^4

 

(vi) 3908.78

             =3.90878\times 1000

            =3.90878\times 10^3

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