Page 86 - Math_Genius_V1.0_C5_Flipbook
P. 86

E:\Working\Focus_Learning\Math_Genius_5_(05-10-2023)\Open_Files\CHAP_04
              \\November 22, 2023 3:12 PM   Surender Prajapati   Proof 5   Reader _________________________   Date: ___________________74





              Step 2: Add the numerator to the product obtained to get the numerator of the improper
                       fraction.
              Step 3: Keep the denominator same.

                                           Whole number × Denominator + Numerator
                       Mixed fraction =
                                                             Denominator
              example 2: Convert the following mixed fractions into improper fractions.
                          3                       3                        2                        7
                    (a)  1                  (b)  4                   (c)  5                   (d)  2
                          8                       5                        7                        9

              Solution: We have,

                          Mixed fraction =    (Whole number × Denominator) + Numerator
                                                                 Denominator
                                            = improper fraction
                          3 (  1 ×  8) + 3    83      11                   3 (   4 ×  5) + 3   20 3      23
                                                                                                  +
                                                +
                    (a)  1 =               =        =                (b)  4 =               =          =
                          8         8           8      8                   5         5            5       5
                          2 (   5 ×  7) + 2   35 2      37                 7 (  2 ×  9) + 7    18 7      25
                                                 +
                                                                                                  +
                    (c)   5 =              =         =               (d)   2 =              =         =
                          7         7           7       7                  9         9           9        9

              EquivalEnt Fractions

              The fractions which represent the same part of a whole object or a fractional number are
              called equivalent or equal fractions.

              Look at the following diagrams. Here, the shaded part of each diagram is equal.




                   1                          2                          3                           4
                   2                          4                          6                           8
                                                             4
                                               1 2 3
                                    4
                               3
                     1
                          2
              Here,   =   =   =  . Thus,  ,  ,   and   are all equivalent fractions.
                     2    4    6    8          2 4 6         8
              Finding Equivalent Fractions
              We can find the equivalent fraction of a given fractions by multiplying the numerator and
              the denominator by the same non-zero number.
                                                                     3
              example 1: Write three equivalent fractions of  .
                                                                     4
              Solution:     We have,

                             3  =  3 × 2  =  ;   =  3 × 3  =   9  ;   =  3 × 4  =  12
                                           6 3
                                                                  3
                             4   4 × 2     8 4     4 × 3     12 4      4 × 4     16
                                     6 9      12                                        3
                            Hence, ,        ,     are three equivalent fractions of  .
                                     8 12 16                                            4

              We can also find out the equivalent fractions by dividing the numerator and the denominator
              by the same non-zero number.


              84                                                                                    Mathematics-5
   81   82   83   84   85   86   87   88   89   90   91