Online Self-Tests(E1)

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  1. If x – 5 = 3, find the value of 2 + (x – 5).

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  Answer:

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  2. Evaluate the expression when x x 0.3 = 3.

  (0.3 × x) – 1

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  Answer:

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  3. If x = 12 and y = 4 , find the value of x – 2 × y.

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  (1 point)

  
  

  
  

  Answer:

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  4. If x = 4 and y= 17, find the value of y – x.

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  (1 point)

  
  

  Answer:

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  5. Evaluate the expression when x= 4 and y= 5.

  x × y

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  (1 point)

  
  

  Answer:

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  6. If x × 2 = 3 and y = 0.4, find the value of x – y.

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  (1 point)

  
  

  Answer:

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