Page 51 - Math Course 2 (Book 1)
P. 51

Introduction to Real Numbers





                 Your Turn!                                       MO. 2 - L1d

                Find Square Roots                                         Compare and Order

                        64                                                    Real Numbers
                Find
                        25
                     8
                 A.
                    25                                                          Let’s Begin

                    64
                 B.
                     5
                                                                  Compare Real Numbers
                     5
                 C.
                     8
                                                                   Examples
                     8
                 D.
                     5
                                                                    Replace the • with <, >, or = to make the sentence
                  Answer                                            true.


                                                                      72  • 7.8

                                                                      72    is between     64    and     81, so     72 > 7.8


                Find Square Roots
                                                                      Answer           72 > 7.8
                SPORTS SCIENCE
                Find the surface area of an athlete
                whose height is 152 centimeters and
                whose weight is 50                                 Replace the • with <, >, or = to make the sentence
                kilograms.                                         true.

                                                                      48  • 6.9
                A. 2.5 m 2
                                                                      48  = 6.9282032...
                B. 1.0 m 2

                                                                             = 6.999999...
                                                                      6.9
                C. 1.1 m 2
                D. 1.5 m 2                                            Answer           48 > 6.9


                  Answer

                                                                           12             61
                                                                    Order          ,    6,  2.4 and       from least to greatest.
                                                                           5              25
                                                                    61  = 2.4
                                                                    25


                                                                     6 = 2.4494987... or about 2.4492



                                                                    2.4   = 2.444444... or about 2.4444





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