Online Self-Tests(A21)

• 
  

  1. Determine the unknown decimal.

  ---

  (1point)

  
  

  0.2

  +

  =

  0.5

  
  
• 
  

  2. Determine the unknown decimal.

  ---

  (1point)

  
  

  0.2

  +

  =

  0.25

  
  
• 
  

  3. Determine the unknown decimal.

  ---

  (1point)

  
  

  +

  0.4

  =

  0.45

  
  
• 
  

  4. Determine the unknown decimal.

  ---

  (1point)

  
  

  +

  1.2

  =

  1.5

  
  
• 
  

  5. Determine the unknown decimal.

  ---

  (1point)

  
  

  0.12

  +

  =

  0.55

  
  
• 
  

  6. Determine the unknown decimal.

  ---

  (1point)

  
  

  +

  0.63

  =

  0.7