Page 30 - Maths Skills - 8
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28                                                                                                  Maths














                                                    MIND MAP




                                                Rational Numbers





          POSITIVE INTEGER/                        WHOLE NUMBERS                               NEGATIVE INTEGER
          NATURAL NUMBER                           W = {0, 1, 2, 3, 4 .........}               {–1, –2, –3 .........}
          N = {1, 2, 3, 4 .........}



                                                           ZERO {0}


                INTEGER NUMBER
                I = {...., –2, –1, 0, 1, 2, ......}


                                                       FRACTIONAL NUMBER
                                                       (these number comes with decimal) includes
                                                       terminating, non-terminating (repeating/non-repeating)
                                 p
          RATIONAL NUMBER       q  q ,   0

          (integer or fractional [terminating + non-terminating {repeating}])




                                                         IRRATIONAL NUMBER
          REAL NUMBER
                                                         (fractional {non-terminating and non-repeating})



          Comparison of Rational                                                           Additive Inverse
          Numbers                                    Multiplicative Inverse                If sum of two rational
                                                                                           numbers is zero then
          p     r  (do cross-multiplication)         If the multiplication of two          both rational numbers
           q    s                                    rational numbers is 1 then            are called additive
          then calculate p × s and q × r             both rational numbers are             inverse
                              p   r                  called multiplicative inverse.             3         –3
                                                        3
                                                               4
          if p × s > q × r then   >  s               i.e.   and   are multiplicative       i.e.   4  and   4   are
                              q
                              p   r                     4      3                           additive inverse
          if p × s < q × r then   <  s               inverse
                              q
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