Page 21 - Start Up Mathematics_3
P. 21

Skip count in 100s means skipping 100 places (digits              Remember
            at the tens and ones places remain the same).
                                                                               For skip counting, we fix
            For example, 7108, 7208, 7308, 7408, 7508                          a number to skip, start

            Skip count in 1000s means skipping 1000 places                     the count from a number,
            (digits at the hundreds, tens and ones places remain               skip the fixed number and
                                                                               continue counting.
            the same).

            For example, 2845, 3845, 4845, 5845, 6845, 7845


            More Than and Less Than

            Consider the number 8135.
            To find a number 2 more than 8135, we add 2 to 8135, i.e., 8135 + 2 = 8137.

            To find a number 3 less than 8135, we subtract 3 from 8135, i.e., 8135 – 3 = 8132.



                                                      EXERCISE 1.4


              1.  Build the greatest and the smallest numbers with the given digits, using each
                   digit only once.

                        Digits                    Greatest Number                       Smallest Number

                  (a)  3, 8, 2, 1

                  (b)  5, 6, 0, 3


                   (c)  9, 5, 8, 7

                  (d)  0, 2, 4, 6


              2.  Skip count in 100s and complete the pattern.

                   (a)  4531, 4631,            ,          ,          ,

                  (b)  5287, 5387,             ,          ,          ,


                   (c)  1872, 1972,            ,          ,          ,


                  (d)  6594, 6694,             ,          ,          ,

              3.  Skip count in 1000s and complete the pattern.

                   (a)  1045, 2045,            ,          ,          ,


                   (b)  3986, 4986,            ,          ,          ,




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