Page 97 - ICSE Math 4
P. 97

For example, Arnabh and Shashwat have only one chocolate                        Top Tip
                    and both of them want to eat it. So, they divide the chocolate
                    into 2 equal pieces and take one piece each.                              2 halves make one
                                                                                                    whole.
                    Now both of them get the same amount of chocolate. So, we

                    can say that each boy has half of the whole chocolate.
                    One-third

                                                                                                           1        1
                    If we divide a whole into 3 equal parts, then each
                                                                                                           3        3
                    part is one-third of the whole. It is represented
                       1                                                                                        1
                    as  .                                                                                       3
                       3
                    For example, John and his two friends buy a pie. They cut                       Top Tip
                    three equal slices of the pie to distribute it equally among
                    themselves. So, we can say that each friend gets one-third                 3 one-thirds make
                                                                                                  one whole.
                    of the whole pie.

                    One-fourth
                                                                                                            1      1
                    If we divide a whole into 4 equal parts, then each                                      4      4
                    part is one-fourth of the whole. It is represented
                       1                                                                                    1      1
                    as  .                                                                                   4      4
                       4

                    For example, Aarohi cuts a cake into 4 equal parts, so that                     Top Tip
                    she and three of her friends can have equal share of the
                                                                                                 4 one-fourths
                    cake. So, we can say that each friend gets one-fourth of
                                                                                               make one whole.
                    the whole cake.
                    Three-fourths


                    If we divide a whole into 4 equal parts and put                                          1
                                                                                                             4
                    three of its parts together, then they are called
                    three-fourths of the whole. It is represented                                                3
                       3                                                                                         4
                    as  .
                       4
                    For example, Zainab divides a pizza into 4 equal parts and takes only 1 part. So, we can say
                    that three-fourths of the whole pizza is le  .

                    Let’s see some examples of frac  ons made by folding and unfolding a square sheet of paper.




                    Step 1:  Take a square sheet of paper.                                          1 whole






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