Page 14 - 新思维数学活动用书6 样章
P. 14

1.2  Rounding decimal numbers



              Exercise 1.2


              Focus

              1    Draw lines to show each number rounded to the nearest tenth.

                   The first one has been done for you.

                           rounds to


                                             8.3
                   8.52
                                             8.4

                                             8.5
                   8.77
                                             8.6


                                             8.7
                   8.35
                                             8.8
              2     Draw a ring around all the numbers which equal 10        Tip

                   when rounded to the nearest whole number.

                   10.53   10.5   10.35   9.55                               Remember
                   10.05     9.5     9.05   9.35                             the numbers
                                                                             could be less
              3    a  Round 7.81 to the nearest tenth.                       than 10 or

                                                                             more than 10.












                   b  Round 7.81 to the nearest whole number.

















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