The addition of natural numbers

Operations with natural numbers I


4. Complete this magic square.

  Esta unidad interactiva requiere la máquina virtual de Java J2RE.

Put the numbers below into the empty cells to complete this magic square which is formed with natural numbers from 0 to 15.

The sum of each horizontal, vertical and diagonal row is 30.

In every 4x4 magic square you will also get the same sum by adding up: the four central numbers, the four numbers in the corners of the square and the four numbers in the corners of each horizontal rectangle that can be formed with 6 cells.

When clicking on Init a new magic square will appear at random.

  Eduardo Barbero Corral
Spanish Ministry of Education. Year 2007

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