Page 17 - trackpad v5.1 class 7 flipbook
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5.  Think and answer.
                    a.  What is a number system?

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                    b.  Compare the decimal and hexadecimal number systems.

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                    c.  Explain how to convert a binary number to a decimal number.
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                    d.  What is the octal number system?

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                    e.  Make the conversions to complete the following table:

                                 Decimal                        Binary

                                     22

                                                                 11101

                                    95

                                                               101110112

                 6.  Solve the following:

                    a.  Convert the following into the given number system and write their results:
                        (i)  (1110)  to decimal number system                    _________________
                                 2
                       (ii)   (75)  to binary number system                      _________________
                               10
                       (iii)   (1100101)  to decimal number system               _________________
                                    2
                       (iv)  (1001110)  to decimal number system                 _________________
                                    2
                    b.  Perform the following operations on binary numbers:

                        (i)   Subtract (1010)  from (11100) 2                    _________________
                                          2
                       (ii)   Add (1101)  and (1010)                             _________________
                                     2           2
                       (iii)   Subtract (11001)  from (100110) 2                 _________________
                                           2
                       (iv)   Add (1000)  and (101)                              _________________
                                       2         2




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