Online Self-Tests(S1)

• 
  

  1. Find the answer to the equation.

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  (1 point)

  
  

  73

  –

  19

  =

  
  
• 
  

  2. Find the answer to the equation.

  ---

  (1 point)

  
  

  104

  –

  15

  =

  
  
• 
  

  3. Find the answer to the equation.

  ---

  (1 point)

  
  

  81

  –

  33

  =

  
  
• 
  

  4. Find the answer to the equation.

  ---

  (1 point)

  
  

  	100
  –	54

  
  
• 
  

  5. Find the answer to the equation.

  ---

  (1 point)

  
  

  	205
  –	77

  
  
• 
  

  6. Find the answer to the equation.

  ---

  (1 point)

  
  

  	782
  –	193