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Interdisciplinary Learning                                                      Activity


                    Complete the number pyramid by filling the missing spots.



















                                                       5        6         9        17






                 NUMBER GRID

                 In a number grid each grid is replaced by the value of its result. Let us start filling the

                 numbers in the grid by solving each grid.
                    We usually start with the number at the centre. Here, it is 30.



                                            10 less
                                           than 30



                                                       1 more
                                1 less                   than
                               than 30      10+20         30                             30




                                          10 more
                                           than 30


                    Now, fill the remaining places in the grid according to the instruction given in each box.

                 SECRET MESSAGE: DECODING

                 Decoding  is  the  process of  converting  a hidden  message to  a meaningful  text.  The
                 hidden message or secret message can be in the form of a symbol, number, picture,

                 letter or a pattern.

                 For example,  if                  1             2             3   then  the  secret message

                                        will be decoded as 132112.



                                                                                          Reasoning and Analysis   41
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