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    21 st   #Technology Literacy
                                                                                                   Century
                      Lab Session                                                                    Skills  #Information Literacy

                          Solve the following:
                          1.  Subtract (1101)  from (100110) .
                                            2               2
                          2.  Add the following binary numbers.

                              a.  (1000)  and (101)               b.  (1011)  and (101)       c.  (1001)  and (101)
                                      2          2                         2         2                 2          2
                              d.  (1111)  and (1111)              e.  (11001)  and (10101)
                                       2          2                         2            2

                     Teacher's Note

                       1.  Talk to the children about the importance of number systems and their use in computers.
                       2.   Do a detailed walk-through of the decimal and binary number systems and their different operations in a

                         mathematically rigorous manner.
                       3.  Give a brief on octal and hexadecimal number systems.

                                                                                                    Number System        17

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