The addition of integers
Operations with integers I
 
5. Add this number to each number of the magic square.
  Esta unidad interactiva requiere la máquina virtual de Java J2RE.

In this exercise you have to add or subtract each number in the magic square to the number on the outside.

The results are the numbers below. Take them to the corresponding cells in the square on the right.

The addition and the subtraction are included in the same operation, because adding up a negative number is the same as subtracting a natural number.
       
           
  Eduardo Barbero Corral
 
Spanish Ministry of Education. Year 2007
 
 


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