Class -4/ Math - Playing with number - 1

                  MY DIGITAL GURUKUL

                             Class - IV

             Math (playing with number) 

F. M.- 20                                          Time - 1h

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1. Fill in the blank. (5) 

   I) _____ is the neither prime nor composite. 

   II) Prime numbers have only ____  factors. 

  III) _______ is the only even prime number. 

   IV) _______ is the smallest odd prime number. 

  V) Common factor of any number is ______.

2.  Find prime factors (Factor tree)   (3) 

           I) 72         II) 124

3.  Find HCF (Common division method) (3+3) 

           I) 14, 32, 56         II) 48,68

4.  Find LCM ( listing method)  (3+3) 

           I) 8, 20, 34           II) 36, 24

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