Squares & Roots
Try and answer these questions. I have done the first one for you:

• What is the square root of 144?
  
  
• What is the square root of 169?
  
  
• What is the square root of 625?
  
  
• What is the square of 15?
  
  
• What is the square of 21?
  
  
• What is the square of 20?

SEE THE ANSWERS