Now try your hand at filling in the squares in a 5x5 square using the numbers 1, 2, 3, 4, ... 25.   Make it a magic square.   What is the magic number?   The magic number is 65 (5 times the middle number)

  14     24       1       8     15  
  23     5     7     14     16  
  4     6     13     20     22  
  10     12     19     21     3  
  11     18     25     2     9