Page 86 - Math Skill - 5
P. 86

84                                                                                                  Maths


               Let’s Attempt


        Example:       Convert the following decimals into fractions.
                          (a)  0.5                       (b)  0.73                       (c)  62.5


        Solution:         (a)  05. =   5  =  1
                                      10    2                                Fact-o-meter

                          (b)   073.  =  73                                Students  should  be  awared  that
                                                                           ‘0’ on the right end of a decimal
                                       100                                 number have no value, if ‘0’ is the

                          (c)   62 5. =  625  =  125  =  62 1              only the place holder.
                                        10      2       2
        Conversion of Fractions into Decimals

        To convert fractions with denominators 10, 100, 1000 and so on into decimals, simply put the
        decimal point before tens, hundreds or thousands place.

        Let’s learn through examples.


               Let’s Attempt

        Example:       Convert the following fractions into decimals.


                       (a)    13                  (b)   351              (c)   1349
                              10                       100                     1000


        Solution:      (a)    13  =  1  3  =  1+  3  =  10 31 3+ .  = .  or  13  =  13 0.  = 13.
                              10     10       10                        10    10


                       (b)    351  =  3  51  =  3 +  51  =  30 51 351+ .  = .   or  351  =  351 0.  =  351.
                              100     100        100                           100     100


                       (c)    1349  = 1  349  = 1+  349  = 1 349.   or   1349  =  1349 0.  =  1 349.
                              1000     1000        1000                  1000      1000

        Conversion of Fractions into decimals by division method

        Step 1:      Divide the numerator by the denominator.
        Step 2:      Complete the division. Let a remainder be left.

        Step 3:      Insert a decimal point in the dividend and the quotient.

        Step 4:        Put a zero on the right of the decimal point in the dividend as well as on the right of
                     the remainder. Divide again just as ordinary numbers.

        Step 5:      Repeat step 4 till the remainder is zero.
                     Let’s learn through examples.
   81   82   83   84   85   86   87   88   89   90   91