Matika

 $5\ +5\ =$  

 $12\ +3\ =$  

 $24\ +\ 42\ =$  

 $13\ +\ 31\ =$  

 $10\ +\ 10\ =$  

 $12\ +\ 6\ =$  

 $500\ +\ 500\ =$  

 $72\ +\ 5\ =$  

 $52\ +\ 13\ =$  

 $200\ +\ 200\ =$