1. Click & drag one of the blue cards directly on top of the yellow number square so that they are aligned.




2. Add the two numbers that show through the windows.
Check the box below that corresponds to the total.

6
8
12
14

3. Slide this same blue card horizontally, vertically or diagonally to some other position so that two other numbers show through the windows.

4. Again, add the two numbers that show in the windows.
Check the box below that corresponds to the total.

6
8
12
14