Page 100 - ICSE Math 4
P. 100

Fraction of a Collection

                               Look at the flowers given alongside. There are                   Remember

                               3 flowers out of which one is red and 2 are                 Fraction of a collection
                               yellow. So, we can say that one-third of the               means a part of the whole
                                                                                                   group.
                               flowers are red and two-thirds of the flowers
                               are yellow.
                                                         1                         2
                    We can write it as: red flowers =   and yellow flowers =
                                                         3                         3
                    In the picture given alongside, we can see 4 birds si   ng
                    on the branch of a tree. Three birds are green and one
                    is blue. So, we can say that three-fourths of the birds
                    are green and one-fourth are blue.
                                                         3                    1
                    We can write it as: green birds =   and blue birds =  .
                                                         4                    4



                              Exercise 8.3




                      1.  Write the frac  on represented by the coloured fi gures in the given collec  ons.


                           (a)                                            (b)




                            (c)                                           (d)



                           (e)                                             (f)



                      2.  Draw and colour pictures of your choice to represent the given frac  ons in a
                           collec  on.
                                3                       1                      1                       1
                           (a)                     (b)                    (c)                    (d)
                                4                       4                      2                       3
                    Types of Fractions

                    There are various types of frac  ons. Let’s learn about them.

                    Like frac  ons: Frac  ons that have the same denominator are called like frac  ons.
                                   1 2 5           7
                    For example,  ,  ,   and   are like frac  ons.
                                   8 8 8           8
                    Unlike frac  ons: Frac  ons which do not have the same denominator are called unlike
                    frac  ons.
                                   2 3 5            8
                    For example,  ,  ,   and            are unlike frac  ons.
                                   5 6 9           15

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