Online Self-Tests(M29)

• 
  

  1. Find the answer to the equation.

  ---

  (1 point)

  
  

  21

  ×

  2

  =

  
  
• 
  

  2. Determine what makes the statement true.

  ---

  (number, +, –, x, ÷, >, <, or =)

  
  

  21

  +

  21

  41

  
  
• 
  

  3. Find the answer to the equation.

  ---

  (1 point)

  
  

  21

  ×

  5

  =

  
  
• 
  

  4. Find the answer to the equation.

  ---

  (1 point)

  
  

  	21
  ×	7

  
  
• 
  

  5. Determine what makes the statement true.

  ---

  (number, +, –, x, ÷, >, <, or =)

  
  

  (21

  +

  21

  +

  21)

  (21

  ×

  3)

  
  
• 
  

  6. Find the answer to the equation.

  ---

  (1 point)

  
  

  	6
  ×	21