Page 1 - Home Assignment- Ch-1 Decimal Expansions of Rational Numbers
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SAI International School
                                                      CLASS - X

               Mathematics
               CHAPTER-1: Real Numbers- 4

               HOME ASSIGNMENT- 4



               SUBTOPIC : Revisiting Rational Numbers and Their Decimal


                                     Expansions

                                                                                              
                    1.  Write the condition to be satisfied by q so that a rational number   has a
                                                                                               

                       terminating decimal expansion.
                                                                          31
                    2.  The decimal expansion of the rational number           will terminate after how
                                                                         5.2 2
                       many decimal places.

                                                                13
                    3.  Write down the decimal expansion of          , without actual division.
                                                               6250
                    4.  Write the condition satisfied by 3125 so that a rational number    11   has a
                                                                                          3125
                       terminating decimal expansion.

                    5.  What can you say about the prime factorization of the denominator of the
                       rational number 63. 7348  ?
                                            ̅̅̅̅̅̅̅

                    6.  Without actually performing the long division, state whether the rational

                       numbers given below will have terminating or non-terminating decimal
                       expansion.

                          (i)        64
                                     455

                          (ii)        15
                                     1600
                          (iii)      6
                                     80












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