Теория:

Explore how grades are read:
  • 'a' square or 'a' in the second stage:
        a2=aa                               
  • 'a' cube or 'a' in the third stage: 
        a3=aaa         
  • 'a' in the fourth stage:  
        a4=aaaa           
Example:
  • \(5\) square:
    52=55=25      
  • \(5\) in the cube:
    53=555=125
  • \(5\) in the fourth stage:     
    54=5555=625
Reference:
Mathematics for 6th grade / Inese Lude. Riga: Pētergailis, 2003– 316 pp. - References: 113.