Online Self-Tests(S33)

• 
  

  1. Determine the unknown value that makes the equation true.

  ---

  (1 point)

  
  

  18

  –

  =

  18

  
  
• 
  

  2. Determine the unknown value that makes the equation true.

  ---

  (1 point)

  
  

  –

  15

  =

  5

  
  
• 
  

  3. Determine the unknown value that makes the equation true.

  ---

  (1 point)

  
  

  51

  –

  =

  37

  
  
• 
  

  4. Determine the unknown value that makes the equation true.

  ---

  (1 point)

  
  

  –

  25

  =

  8

  
  
• 
  

  5. Determine the unknown value that makes the equation true.

  ---

  (1 point)

  
  

  39

  –

  =

  26

  
  
• 
  

  6. Determine the unknown value that makes the equation true.

  ---

  (1 point)

  
  

  –

  38

  =

  13