Page 48 - Math Course 2 (Book 1)
P. 48

Introduction to Real Numbers




         Your Turn!                                         MO. 2 - L1b


        Classify Real Numbers
                                               7                Graphing Real Numbers
         Name the set or sets of numbers to which
         belongs.                              9

         A. whole                                                      Vocabulary A-Z
         B. rationals                                                  Let us learn some vocabulary
         C. integers
         D. naturals
          Answer
                                                           to graph

         Name the set or sets of numbers to which    36       a set of numbers means to draw, or plot, the points
         belongs.                                          named by those numbers on a number line.

         A. naturals, wholes, integers, rationals
         B. irrationals                                    coordinate
         C. integers only
         D. none of the above                              The number that corresponds to a point on a
                                                           number line is called the coordinate of that point.
          Answer
                                                                        { –  4  ,–  1  ,  2  ,  5  {


         Name the set or sets of numbers to which    45                      3   3   3  3
         belongs.

         A. whole
         B. integers                                          5   4  –1  – 2  – 1  0  1 2  1  4 5  2  7
         C. irrationals                                      – –  3     3  3      3 3       3 3      3
                                                              3
         D. naturals

          Answer
                                                                        Let’s Begin


        Closure Property
         Determine whether each set of numbers is closed   Graph Real Numbers
         under the indicated operation, integers, division.

         A. Closed                                         Examples
         B. not closed

          Answer
                                                                     2    1    2
                                                            Graph {        ,         , 1,      }
                                                                   –
                                                                        –
                                                                     3    2    3
         Determine whether each set of numbers is closed       Answer
         under the indicated operation, real, division.

         A. Closed                                                    5     2      1     1      2
         B. not closed                                              –   –2  –  –1 –   0     1
                                                                      2     3      2     2      3

          Answer




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