The addition of natural numbers

Operations with natural numbers I

 
7. Add up the numbers of the corresponding cells.
  Esta unidad interactiva requiere la máquina virtual de Java J2RE.

Add up the numbers of the corresponding cells of these magic squares.

The results are the numbers below. Take them to the corresponding cells in the square on the right. You will obtain another magic square.

       
           
  Eduardo Barbero Corral
 
Spanish Ministry of Education. Year 2007
 
 


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