Page 269 - SK Year 5 Mathematics DLP
P. 269

3   The pie chart shows the number of                   Jelly Flavours in a
                      four jelly flavours in a container.                      Container
                                                                                     Mango
                       a   What is the percentage of                      Kiwi          13
                          kiwi flavour?                                    20
                                                                                           Grape
                       b   Calculate the mean of each                  Strawberry            25
                          jelly flavour.                                    22







                      Solution             Kiwi     Mango         Grape         Strawberry
                                           20          13           25               22

                                                             100%
                                           ? %

                  Total up 20, 13, 25 and 22 to calculate the total number of jellies.

                  There are 4 jelly flavours.




                  a   Number of kiwi flavour = 20            b  Mean =       total number of jellies
                                                                               number of flavours
                      Total number of jellies
                                                                          80
                      = 20 + 13 + 25 + 22                               =   4

                      = 80                                              = 20
                      The percentage of kiwi flavour
                         1
                        20      25
                      =      × 100%
                        80
                        4
                         1
                      = 25%







                    The percentage of kiwi flavour is 25%.

                    The mean of each flavour is 20.




                                                                                                       261
                                    • Vary questions using the above information such as finding the
                              8.3.1
                                     percentage of other jellies and find the mode.
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