Online Self-Tests(E9)

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  1. If 20 = x ÷ 5, find the value of 100 ÷ (x – 50).

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  (1 point)

  
  

  Answer:

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  2. Evaluate the expression when 8 x x = 16.

  5 – x x 2

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  Answer:

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  3. If x = 7, find the value of 14 ÷ x + 2.

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  (1 point)

  
  

  
  
  

  Answer:

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  4. If x = 3, find the value of 1 + x ÷ 3.

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  (1 point)

  
  

  Answer:

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  5. Evaluate the expression when x ÷ 5 = 2.

  (15 – x) ÷ 5

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  (1 point)

  
  

  Answer:

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  6. If (0.5 x x) = 1, find the value of x + x x x.

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  (1 point)

  
  

  Answer:

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